diff --git a/src/app/tape/share/resources/tapeicon.qrc b/src/app/tape/share/resources/tapeicon.qrc
index ba2328ff5..026f42132 100644
--- a/src/app/tape/share/resources/tapeicon.qrc
+++ b/src/app/tape/share/resources/tapeicon.qrc
@@ -8,5 +8,6 @@
         <file>tapeicon/24x24/red_plus.png</file>
         <file>tapeicon/24x24/padlock_locked.png</file>
         <file>tapeicon/24x24/padlock_opened.png</file>
+        <file>tapeicon/24x24/mannequin.png</file>
     </qresource>
 </RCC>
diff --git a/src/app/tape/share/resources/tapeicon/24x24/mannequin.png b/src/app/tape/share/resources/tapeicon/24x24/mannequin.png
new file mode 100644
index 000000000..e1d3e554c
Binary files /dev/null and b/src/app/tape/share/resources/tapeicon/24x24/mannequin.png differ
diff --git a/src/app/tape/tmainwindow.cpp b/src/app/tape/tmainwindow.cpp
index fe3fe9ce3..d739f4fd1 100644
--- a/src/app/tape/tmainwindow.cpp
+++ b/src/app/tape/tmainwindow.cpp
@@ -97,7 +97,7 @@ TMainWindow::TMainWindow(QWidget *parent)
       labelGradationSizes(nullptr),
       labelPatternUnit(nullptr),
       actionDockDiagram(nullptr),
-      dockDiagramVisible(false),
+      dockDiagramVisible(true),
       isInitialized(false),
       recentFileActs(),
       separatorAct(nullptr)
@@ -1757,7 +1757,9 @@ void TMainWindow::SetupMenu()
     actionDockDiagram = ui->dockWidgetDiagram->toggleViewAction();
     actionDockDiagram->setMenuRole(QAction::NoRole);
     ui->menuMeasurements->addAction(actionDockDiagram);
+    ui->mainToolBar->addAction(actionDockDiagram);
     actionDockDiagram->setEnabled(false);
+    actionDockDiagram->setIcon(QIcon("://tapeicon/24x24/mannequin.png"));
 
     // Window
     connect(ui->menuWindow, &QMenu::aboutToShow, this, &TMainWindow::AboutToShowWindowMenu);