diff --git a/src/Gui/Widgets.cpp b/src/Gui/Widgets.cpp
index 0c5c9f123c..57ccb8c325 100644
--- a/src/Gui/Widgets.cpp
+++ b/src/Gui/Widgets.cpp
@@ -774,6 +774,7 @@ void ColorButton::onChooseColor()
         }
 
         cd.setCurrentColor(currentColor);
+        cd.adjustSize();
         if (cd.exec() == QDialog::Accepted) {
             QColor c = cd.selectedColor();
             if (c.isValid()) {