diff --git a/src/Gui/DlgPreferencesImp.cpp b/src/Gui/DlgPreferencesImp.cpp
index ea17cee804..b6db2e073a 100644
--- a/src/Gui/DlgPreferencesImp.cpp
+++ b/src/Gui/DlgPreferencesImp.cpp
@@ -759,6 +759,14 @@ void DlgPreferencesImp::showEvent(QShowEvent* ev)
         move(x(), heightDifference / 2);
     }
 
+    expandToMinimumDialogWidth();
+}
+
+void DlgPreferencesImp::expandToMinimumDialogWidth()
+{
+    auto screen = windowHandle()->screen();
+    auto availableSize = screen->availableSize();
+
     // if the expanded dialog occupies less than 50% of the screen
     int mw = minimumDialogWidth(minimumPageWidth());
     if (availableSize.width() > 2 * mw) {
@@ -878,8 +886,10 @@ void DlgPreferencesImp::changeEvent(QEvent *e)
             }
         }
 
+        expandToMinimumDialogWidth();
         updatePageDependentWidgets();
-    } else {
+    }
+    else {
         QWidget::changeEvent(e);
     }
 }
diff --git a/src/Gui/DlgPreferencesImp.h b/src/Gui/DlgPreferencesImp.h
index 3b4fbaa554..34a8be368b 100644
--- a/src/Gui/DlgPreferencesImp.h
+++ b/src/Gui/DlgPreferencesImp.h
@@ -185,6 +185,7 @@ private:
     void addSizeHint(QWidget*);
     int minimumPageWidth() const;
     int minimumDialogWidth(int) const;
+    void expandToMinimumDialogWidth();
     //@}
 
 private: