diff --git a/qt_gui/resource/dock_widget_title_bar.ui b/qt_gui/resource/dock_widget_title_bar.ui
index 64917ce6..18246fe4 100644
--- a/qt_gui/resource/dock_widget_title_bar.ui
+++ b/qt_gui/resource/dock_widget_title_bar.ui
@@ -93,6 +93,12 @@
      <property name="text">
       <string>D</string>
      </property>
+     <property name="iconSize">
+      <size>
+       <width>16</width>
+       <height>16</height>
+      </size>
+     </property>
      <property name="checkable">
       <bool>true</bool>
      </property>
@@ -124,6 +130,12 @@
      <property name="text">
       <string>C</string>
      </property>
+     <property name="iconSize">
+      <size>
+       <width>16</width>
+       <height>16</height>
+      </size>
+     </property>
      <property name="flat">
       <bool>true</bool>
      </property>
@@ -149,6 +161,12 @@
      <property name="text">
       <string>R</string>
      </property>
+     <property name="iconSize">
+      <size>
+       <width>16</width>
+       <height>16</height>
+      </size>
+     </property>
      <property name="flat">
       <bool>true</bool>
      </property>
@@ -233,6 +251,12 @@
      <property name="text">
       <string>_</string>
      </property>
+     <property name="iconSize">
+      <size>
+       <width>16</width>
+       <height>16</height>
+      </size>
+     </property>
      <property name="flat">
       <bool>true</bool>
      </property>