diff --git a/designer/preferences.ui b/designer/preferences.ui
index 7b4425214..5a9f8f5b0 100644
--- a/designer/preferences.ui
+++ b/designer/preferences.ui
@@ -50,6 +50,9 @@
              <verstretch>0</verstretch>
             </sizepolicy>
            </property>
+           <property name="sizeAdjustPolicy">
+            <enum>QComboBox::AdjustToMinimumContentsLengthWithIcon</enum>
+           </property>
           </widget>
          </item>
         </layout>