1 files changed, 4 insertions, 0 deletions
diff --git a/src/widgets/widgets/qtoolbutton.cpp b/src/widgets/widgets/qtoolbutton.cpp
index 1b5ba8cd58..a3845c96f2 100644
--- a/src/widgets/widgets/qtoolbutton.cpp
+++ b/src/widgets/widgets/qtoolbutton.cpp
@@ -653,6 +653,10 @@ void QToolButton::setMenu(QMenu* menu)
     } else {
         d->menuAction = 0;
     }
+
+    // changing the menu set may change the size hint, so reset it
+    d->sizeHint = QSize();
+    updateGeometry();
     update();
 }