diff --git a/src/app/dialogs/tools/dialogdetail.cpp b/src/app/dialogs/tools/dialogdetail.cpp
index 4a0dd4a27..3fb553255 100644
--- a/src/app/dialogs/tools/dialogdetail.cpp
+++ b/src/app/dialogs/tools/dialogdetail.cpp
@@ -44,7 +44,7 @@
  * @param parent parent widget
  */
 DialogDetail::DialogDetail(const VContainer *data, const quint32 &toolId, QWidget *parent)
-    :DialogTool(data, toolId, parent), ui(), detail(VDetail()), supplement(true), closed(true)
+    :DialogTool(data, toolId, parent), ui(), detail(VDetail()), supplement(true), closed(true), flagWidth(true)
 {
     ui.setupUi(this);
     labelEditNamePoint = ui.labelEditNameDetail;
@@ -71,6 +71,8 @@ DialogDetail::DialogDetail(const VContainer *data, const quint32 &toolId, QWidge
             this, &DialogDetail::BiasXChanged);
     connect(ui.doubleSpinBoxBiasY,  static_cast<void (QDoubleSpinBox::*)(qreal)>(&QDoubleSpinBox::valueChanged),
             this, &DialogDetail::BiasYChanged);
+    connect(ui.doubleSpinBoxSeams,  static_cast<void (QDoubleSpinBox::*)(qreal)>(&QDoubleSpinBox::valueChanged),
+            this, &DialogDetail::AlowenceChanged);
     connect(ui.checkBoxSeams, &QCheckBox::clicked, this, &DialogDetail::ClickedSeams);
     connect(ui.checkBoxClosed, &QCheckBox::clicked, this, &DialogDetail::ClickedClosed);
     connect(ui.checkBoxReverse, &QCheckBox::clicked, this, &DialogDetail::ClickedReverse);
@@ -137,6 +139,18 @@ void DialogDetail::SaveData()
     detail = CreateDetail();
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void DialogDetail::CheckState()
+{
+    SCASSERT(bOk != nullptr);
+    bOk->setEnabled(flagFormula && flagName && flagError && flagWidth);
+    // In case dialog hasn't apply button
+    if ( bApply != nullptr)
+    {
+        bApply->setEnabled(bOk->isEnabled());
+    }
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 /**
  * @brief NewItem add new object (point, arc, spline or spline path) to list
@@ -300,6 +314,25 @@ void DialogDetail::BiasYChanged(qreal d)
     item->setData(Qt::UserRole, QVariant::fromValue(node));
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void DialogDetail::AlowenceChanged(qreal d)
+{
+    if (ui.doubleSpinBoxSeams->isEnabled())
+    {
+        if (d <= 0)
+        {
+            flagWidth = false;
+            ChangeColor(ui.labelEditWidth, errorColor);
+        }
+        else
+        {
+            flagWidth = true;
+            ChangeColor(ui.labelEditWidth, okColor);
+        }
+        CheckState();
+    }
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 /**
  * @brief ClickedSeams save supplement of seams for detail
@@ -310,6 +343,18 @@ void DialogDetail::ClickedSeams(bool checked)
     supplement = checked;
     ui.checkBoxClosed->setEnabled(checked);
     ui.doubleSpinBoxSeams->setEnabled(checked);
+
+    if (checked && ui.doubleSpinBoxSeams->value() <= 0)
+    {
+        flagWidth = false;
+        ChangeColor(ui.labelEditWidth, errorColor);
+    }
+    else
+    {
+        flagWidth = true;
+        ChangeColor(ui.labelEditWidth, okColor);
+    }
+    CheckState();
 }
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/app/dialogs/tools/dialogdetail.h b/src/app/dialogs/tools/dialogdetail.h
index 71eeafe6c..a3718d520 100644
--- a/src/app/dialogs/tools/dialogdetail.h
+++ b/src/app/dialogs/tools/dialogdetail.h
@@ -48,6 +48,7 @@ public slots:
     virtual void     ChosenObject(quint32 id, const SceneObject &type);
     void             BiasXChanged(qreal d);
     void             BiasYChanged(qreal d);
+    void             AlowenceChanged(qreal d);
     void             ClickedSeams(bool checked);
     void             ClickedClosed(bool checked);
     void             ClickedReverse(bool checked);
@@ -59,6 +60,7 @@ protected:
      * @brief SaveData Put dialog data in local variables
      */
     virtual void     SaveData();
+    virtual void     CheckState();
 private:
 
     /** @brief ui keeps information about user interface */
@@ -72,6 +74,7 @@ private:
 
     /** @brief closed keep option about equdistant (closed or not) */
     bool             closed;
+    bool             flagWidth;
 
     void             NewItem(quint32 id, const Tool &typeTool, const NodeDetail &typeNode,
                              qreal mx = 0, qreal my = 0, bool reverse = false);