diff --git a/scribus/ui/prefs_itemtoolsbase.ui b/scribus/ui/prefs_itemtoolsbase.ui
--- a/scribus/ui/prefs_itemtoolsbase.ui
+++ b/scribus/ui/prefs_itemtoolsbase.ui
@@ -895,6 +895,12 @@
                </item>
                <item row="0" column="2" rowspan="2">
                 <widget class="LinkButton" name="scalingLockToolButton">
+                 <property name="sizePolicy">
+                  <sizepolicy hsizetype="Fixed" vsizetype="Preferred">
+                   <horstretch>0</horstretch>
+                   <verstretch>0</verstretch>
+                  </sizepolicy>
+                 </property>
                  <property name="minimumSize">
                   <size>
                    <width>15</width>
@@ -901,6 +907,12 @@
                    <height>0</height>
                   </size>
                  </property>
+                 <property name="maximumSize">
+                  <size>
+                   <width>15</width>
+                   <height>16777215</height>
+                  </size>
+                 </property>
                  <property name="text">
                   <string>...</string>
                  </property>