diff --git a/src/app/dialogs/tools/dialogalongline.cpp b/src/app/dialogs/tools/dialogalongline.cpp
index 66a45239f..eea51a13c 100644
--- a/src/app/dialogs/tools/dialogalongline.cpp
+++ b/src/app/dialogs/tools/dialogalongline.cpp
@@ -190,6 +190,13 @@ void DialogAlongLine::SaveData()
     line->RefreshGeometry();
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void DialogAlongLine::closeEvent(QCloseEvent *event)
+{
+    ui->plainTextEditFormula->blockSignals(true);
+    DialogTool::closeEvent(event);
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 /**
  * @brief setSecondPointId set id second point of line
diff --git a/src/app/dialogs/tools/dialogalongline.h b/src/app/dialogs/tools/dialogalongline.h
index 335ffd22a..01dd498a5 100644
--- a/src/app/dialogs/tools/dialogalongline.h
+++ b/src/app/dialogs/tools/dialogalongline.h
@@ -78,6 +78,7 @@ protected:
      * @brief SaveData Put dialog data in local variables
      */
     virtual void        SaveData();
+    virtual void        closeEvent(QCloseEvent *event);
 private:
     Q_DISABLE_COPY(DialogAlongLine)
 
diff --git a/src/app/dialogs/tools/dialogarc.cpp b/src/app/dialogs/tools/dialogarc.cpp
index 9d0293416..7349aedbb 100644
--- a/src/app/dialogs/tools/dialogarc.cpp
+++ b/src/app/dialogs/tools/dialogarc.cpp
@@ -240,6 +240,15 @@ void DialogArc::SaveData()
     path->RefreshGeometry();
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void DialogArc::closeEvent(QCloseEvent *event)
+{
+    ui->plainTextEditFormula->blockSignals(true);
+    ui->plainTextEditF1->blockSignals(true);
+    ui->plainTextEditF2->blockSignals(true);
+    DialogTool::closeEvent(event);
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 /**
  * @brief ValChenged show description angles of lines
diff --git a/src/app/dialogs/tools/dialogarc.h b/src/app/dialogs/tools/dialogarc.h
index b042268ea..189e86abe 100644
--- a/src/app/dialogs/tools/dialogarc.h
+++ b/src/app/dialogs/tools/dialogarc.h
@@ -83,6 +83,7 @@ protected:
      * @brief SaveData Put dialog data in local variables
      */
     virtual void  SaveData();
+    virtual void  closeEvent(QCloseEvent *event);
 private:
     Q_DISABLE_COPY(DialogArc)
 
diff --git a/src/app/dialogs/tools/dialogbisector.cpp b/src/app/dialogs/tools/dialogbisector.cpp
index b2a9a8535..cbcdedfee 100644
--- a/src/app/dialogs/tools/dialogbisector.cpp
+++ b/src/app/dialogs/tools/dialogbisector.cpp
@@ -287,3 +287,10 @@ void DialogBisector::SaveData()
     line->setLineStyle(VAbstractTool::LineStyle(typeLine));
     line->RefreshGeometry();
 }
+
+//---------------------------------------------------------------------------------------------------------------------
+void DialogBisector::closeEvent(QCloseEvent *event)
+{
+    ui->plainTextEditFormula->blockSignals(true);
+    DialogTool::closeEvent(event);
+}
diff --git a/src/app/dialogs/tools/dialogbisector.h b/src/app/dialogs/tools/dialogbisector.h
index 4b3cabad0..2cc69c2ca 100644
--- a/src/app/dialogs/tools/dialogbisector.h
+++ b/src/app/dialogs/tools/dialogbisector.h
@@ -83,6 +83,7 @@ protected:
      * @brief SaveData Put dialog data in local variables
      */
     virtual void       SaveData();
+    virtual void       closeEvent(QCloseEvent *event);
 private:
     Q_DISABLE_COPY(DialogBisector)
 
diff --git a/src/app/dialogs/tools/dialogcurveintersectaxis.cpp b/src/app/dialogs/tools/dialogcurveintersectaxis.cpp
index 65f0c54d2..34e85644e 100644
--- a/src/app/dialogs/tools/dialogcurveintersectaxis.cpp
+++ b/src/app/dialogs/tools/dialogcurveintersectaxis.cpp
@@ -269,3 +269,10 @@ void DialogCurveIntersectAxis::SaveData()
     line->setLineStyle(VAbstractTool::LineStyle(typeLine));
     line->RefreshGeometry();
 }
+
+//---------------------------------------------------------------------------------------------------------------------
+void DialogCurveIntersectAxis::closeEvent(QCloseEvent *event)
+{
+    ui->plainTextEditFormula->blockSignals(true);
+    DialogTool::closeEvent(event);
+}
diff --git a/src/app/dialogs/tools/dialogcurveintersectaxis.h b/src/app/dialogs/tools/dialogcurveintersectaxis.h
index 19b83efc6..9ab667062 100644
--- a/src/app/dialogs/tools/dialogcurveintersectaxis.h
+++ b/src/app/dialogs/tools/dialogcurveintersectaxis.h
@@ -73,6 +73,7 @@ protected:
      * @brief SaveData Put dialog data in local variables
      */
     virtual void SaveData();
+    virtual void closeEvent(QCloseEvent *event);
 private:
     Q_DISABLE_COPY(DialogCurveIntersectAxis)
     Ui::DialogCurveIntersectAxis *ui;
diff --git a/src/app/dialogs/tools/dialogcutarc.cpp b/src/app/dialogs/tools/dialogcutarc.cpp
index 748ff0501..c5fc282b2 100644
--- a/src/app/dialogs/tools/dialogcutarc.cpp
+++ b/src/app/dialogs/tools/dialogcutarc.cpp
@@ -137,6 +137,13 @@ void DialogCutArc::SaveData()
     path->RefreshGeometry();
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void DialogCutArc::closeEvent(QCloseEvent *event)
+{
+    ui->plainTextEditFormula->blockSignals(true);
+    DialogTool::closeEvent(event);
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 /**
  * @brief setArcId set id of arc
diff --git a/src/app/dialogs/tools/dialogcutarc.h b/src/app/dialogs/tools/dialogcutarc.h
index a320b7e37..d2cf2f288 100644
--- a/src/app/dialogs/tools/dialogcutarc.h
+++ b/src/app/dialogs/tools/dialogcutarc.h
@@ -73,6 +73,7 @@ protected:
      * @brief SaveData Put dialog data in local variables
      */
     virtual void      SaveData();
+    virtual void      closeEvent(QCloseEvent *event);
 private:
     Q_DISABLE_COPY(DialogCutArc)
     /** @brief ui keeps information about user interface */
diff --git a/src/app/dialogs/tools/dialogcutspline.cpp b/src/app/dialogs/tools/dialogcutspline.cpp
index ebfb4e5a9..7c739fa99 100644
--- a/src/app/dialogs/tools/dialogcutspline.cpp
+++ b/src/app/dialogs/tools/dialogcutspline.cpp
@@ -152,6 +152,13 @@ void DialogCutSpline::SaveData()
     path->RefreshGeometry();
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void DialogCutSpline::closeEvent(QCloseEvent *event)
+{
+    ui->plainTextEditFormula->blockSignals(true);
+    DialogTool::closeEvent(event);
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 void DialogCutSpline::DeployFormulaTextEdit()
 {
diff --git a/src/app/dialogs/tools/dialogcutspline.h b/src/app/dialogs/tools/dialogcutspline.h
index 257324c54..163d703c0 100644
--- a/src/app/dialogs/tools/dialogcutspline.h
+++ b/src/app/dialogs/tools/dialogcutspline.h
@@ -68,6 +68,7 @@ protected:
      * @brief SaveData Put dialog data in local variables
      */
     virtual void        SaveData();
+    virtual void        closeEvent(QCloseEvent *event);
 private:
     Q_DISABLE_COPY(DialogCutSpline)
 
diff --git a/src/app/dialogs/tools/dialogcutsplinepath.cpp b/src/app/dialogs/tools/dialogcutsplinepath.cpp
index a5abc37e1..5dd32cce1 100644
--- a/src/app/dialogs/tools/dialogcutsplinepath.cpp
+++ b/src/app/dialogs/tools/dialogcutsplinepath.cpp
@@ -152,6 +152,13 @@ void DialogCutSplinePath::SaveData()
     path->RefreshGeometry();
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void DialogCutSplinePath::closeEvent(QCloseEvent *event)
+{
+    ui->plainTextEditFormula->blockSignals(true);
+    DialogTool::closeEvent(event);
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 void DialogCutSplinePath::DeployFormulaTextEdit()
 {
diff --git a/src/app/dialogs/tools/dialogcutsplinepath.h b/src/app/dialogs/tools/dialogcutsplinepath.h
index ff06576c1..063cd316b 100644
--- a/src/app/dialogs/tools/dialogcutsplinepath.h
+++ b/src/app/dialogs/tools/dialogcutsplinepath.h
@@ -68,6 +68,7 @@ protected:
      * @brief SaveData Put dialog data in local variables
      */
     virtual void SaveData();
+    virtual void closeEvent(QCloseEvent *event);
 private:
     Q_DISABLE_COPY(DialogCutSplinePath)
 
diff --git a/src/app/dialogs/tools/dialogeditwrongformula.cpp b/src/app/dialogs/tools/dialogeditwrongformula.cpp
index fa7170e39..3987b12a7 100644
--- a/src/app/dialogs/tools/dialogeditwrongformula.cpp
+++ b/src/app/dialogs/tools/dialogeditwrongformula.cpp
@@ -113,6 +113,13 @@ void DialogEditWrongFormula::CheckState()
     bOk->setEnabled(flagFormula);
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void DialogEditWrongFormula::closeEvent(QCloseEvent *event)
+{
+    ui->plainTextEditFormula->blockSignals(true);
+    DialogTool::closeEvent(event);
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 void DialogEditWrongFormula::setFormula(const QString &value)
 {
diff --git a/src/app/dialogs/tools/dialogeditwrongformula.h b/src/app/dialogs/tools/dialogeditwrongformula.h
index 8a6de06e9..a2d389baf 100644
--- a/src/app/dialogs/tools/dialogeditwrongformula.h
+++ b/src/app/dialogs/tools/dialogeditwrongformula.h
@@ -65,6 +65,7 @@ public slots:
     virtual void EvalFormula();
 protected:
     virtual void CheckState();
+    virtual void closeEvent(QCloseEvent *event);
 private:
     Q_DISABLE_COPY(DialogEditWrongFormula)
     Ui::DialogEditWrongFormula *ui;
diff --git a/src/app/dialogs/tools/dialogendline.cpp b/src/app/dialogs/tools/dialogendline.cpp
index 76ef75132..3c13c3dfe 100644
--- a/src/app/dialogs/tools/dialogendline.cpp
+++ b/src/app/dialogs/tools/dialogendline.cpp
@@ -1,4 +1,4 @@
-/************************************************************************
+/************************************************************************
  **
  **  @file   dialogendline.cpp
  **  @author Roman Telezhynskyi <dismine(at)gmail.com>
@@ -291,6 +291,14 @@ void DialogEndLine::SaveData()
     line->RefreshGeometry();
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void DialogEndLine::closeEvent(QCloseEvent *event)
+{
+    ui->plainTextEditFormula->blockSignals(true);
+    ui->plainTextEditAngle->blockSignals(true);
+    DialogTool::closeEvent(event);
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 DialogEndLine::~DialogEndLine()
 {
diff --git a/src/app/dialogs/tools/dialogendline.h b/src/app/dialogs/tools/dialogendline.h
index 6fa3ebfc4..0747f4b65 100644
--- a/src/app/dialogs/tools/dialogendline.h
+++ b/src/app/dialogs/tools/dialogendline.h
@@ -83,6 +83,7 @@ protected:
      * @brief SaveData Put dialog data in local variables
      */
     virtual void     SaveData();
+    virtual void     closeEvent(QCloseEvent *event);
 private:
     Q_DISABLE_COPY(DialogEndLine)
 
diff --git a/src/app/dialogs/tools/dialoglineintersectaxis.cpp b/src/app/dialogs/tools/dialoglineintersectaxis.cpp
index 30ac4d701..baf4b44db 100644
--- a/src/app/dialogs/tools/dialoglineintersectaxis.cpp
+++ b/src/app/dialogs/tools/dialoglineintersectaxis.cpp
@@ -336,3 +336,10 @@ void DialogLineIntersectAxis::SaveData()
     line->setLineStyle(VAbstractTool::LineStyle(typeLine));
     line->RefreshGeometry();
 }
+
+//---------------------------------------------------------------------------------------------------------------------
+void DialogLineIntersectAxis::closeEvent(QCloseEvent *event)
+{
+    ui->plainTextEditFormula->blockSignals(true);
+    DialogTool::closeEvent(event);
+}
diff --git a/src/app/dialogs/tools/dialoglineintersectaxis.h b/src/app/dialogs/tools/dialoglineintersectaxis.h
index cc287c199..73115d278 100644
--- a/src/app/dialogs/tools/dialoglineintersectaxis.h
+++ b/src/app/dialogs/tools/dialoglineintersectaxis.h
@@ -77,6 +77,7 @@ protected:
      * @brief SaveData Put dialog data in local variables
      */
     virtual void SaveData();
+    virtual void closeEvent(QCloseEvent *event);
 private:
     Q_DISABLE_COPY(DialogLineIntersectAxis)
     Ui::DialogLineIntersectAxis *ui;
diff --git a/src/app/dialogs/tools/dialognormal.cpp b/src/app/dialogs/tools/dialognormal.cpp
index f6b508aad..f71fb5663 100644
--- a/src/app/dialogs/tools/dialognormal.cpp
+++ b/src/app/dialogs/tools/dialognormal.cpp
@@ -184,6 +184,13 @@ void DialogNormal::SaveData()
     line->RefreshGeometry();
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void DialogNormal::closeEvent(QCloseEvent *event)
+{
+    ui->plainTextEditFormula->blockSignals(true);
+    DialogTool::closeEvent(event);
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 /**
  * @brief setSecondPointId set id of second point
diff --git a/src/app/dialogs/tools/dialognormal.h b/src/app/dialogs/tools/dialognormal.h
index 222ced37b..0b346d473 100644
--- a/src/app/dialogs/tools/dialognormal.h
+++ b/src/app/dialogs/tools/dialognormal.h
@@ -82,6 +82,7 @@ protected:
      * @brief SaveData Put dialog data in local variables
      */
     virtual void     SaveData();
+    virtual void     closeEvent(QCloseEvent *event);
 private:
     Q_DISABLE_COPY(DialogNormal)
 
diff --git a/src/app/dialogs/tools/dialogpointofcontact.cpp b/src/app/dialogs/tools/dialogpointofcontact.cpp
index 4af6aa7cc..2ee18bfd8 100644
--- a/src/app/dialogs/tools/dialogpointofcontact.cpp
+++ b/src/app/dialogs/tools/dialogpointofcontact.cpp
@@ -225,6 +225,13 @@ void DialogPointOfContact::SaveData()
     line->RefreshGeometry();
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void DialogPointOfContact::closeEvent(QCloseEvent *event)
+{
+    ui->plainTextEditFormula->blockSignals(true);
+    DialogTool::closeEvent(event);
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 /**
  * @brief setSecondPoint set id second point
diff --git a/src/app/dialogs/tools/dialogpointofcontact.h b/src/app/dialogs/tools/dialogpointofcontact.h
index 11fd4ed7a..2b7126f3e 100644
--- a/src/app/dialogs/tools/dialogpointofcontact.h
+++ b/src/app/dialogs/tools/dialogpointofcontact.h
@@ -80,6 +80,7 @@ protected:
      * @brief SaveData Put dialog data in local variables
      */
     virtual void   SaveData();
+    virtual void   closeEvent(QCloseEvent *event);
 private:
     Q_DISABLE_COPY(DialogPointOfContact)
 
diff --git a/src/app/dialogs/tools/dialogshoulderpoint.cpp b/src/app/dialogs/tools/dialogshoulderpoint.cpp
index 55c062a67..e07a72a5b 100644
--- a/src/app/dialogs/tools/dialogshoulderpoint.cpp
+++ b/src/app/dialogs/tools/dialogshoulderpoint.cpp
@@ -213,6 +213,13 @@ void DialogShoulderPoint::SaveData()
     line->RefreshGeometry();
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void DialogShoulderPoint::closeEvent(QCloseEvent *event)
+{
+    ui->plainTextEditFormula->blockSignals(true);
+    DialogTool::closeEvent(event);
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 /**
  * @brief setPShoulder set id shoulder point
diff --git a/src/app/dialogs/tools/dialogshoulderpoint.h b/src/app/dialogs/tools/dialogshoulderpoint.h
index 5e46f4a68..47c1d489c 100644
--- a/src/app/dialogs/tools/dialogshoulderpoint.h
+++ b/src/app/dialogs/tools/dialogshoulderpoint.h
@@ -82,6 +82,7 @@ protected:
      * @brief SaveData Put dialog data in local variables
      */
     virtual void   SaveData();
+    virtual void   closeEvent(QCloseEvent *event);
 private:
     Q_DISABLE_COPY(DialogShoulderPoint)
 
diff --git a/src/app/dialogs/tools/dialogtool.cpp b/src/app/dialogs/tools/dialogtool.cpp
index a8da5a01c..ef3d57c4a 100644
--- a/src/app/dialogs/tools/dialogtool.cpp
+++ b/src/app/dialogs/tools/dialogtool.cpp
@@ -87,7 +87,7 @@ DialogTool::~DialogTool()
  */
 void DialogTool::closeEvent(QCloseEvent *event)
 {
-    DialogClosed(QDialog::Rejected);
+    DialogRejected();
     event->accept();
 }