diff --git a/src/Gui/DlgPreferencesImp.cpp b/src/Gui/DlgPreferencesImp.cpp
index f327cd7740..76d64b045d 100644
--- a/src/Gui/DlgPreferencesImp.cpp
+++ b/src/Gui/DlgPreferencesImp.cpp
@@ -303,6 +303,7 @@ void DlgPreferencesImp::applyChanges()
 void DlgPreferencesImp::showEvent(QShowEvent* ev)
 {
     //canEmbedScrollArea = false;
+    this->adjustSize();
     QDialog::showEvent(ev);
 }