diff --git a/src/calibre/gui2/preferences/columns.ui b/src/calibre/gui2/preferences/columns.ui
index b5dc9b8c90..a9d82530ec 100644
--- a/src/calibre/gui2/preferences/columns.ui
+++ b/src/calibre/gui2/preferences/columns.ui
@@ -38,6 +38,9 @@
     <layout class="QVBoxLayout" name="verticalLayout_3">
      <item>
       <widget class="QToolButton" name="column_up">
+       <property name="toolTip">
+        <string>Move column up</string>
+       </property>
        <property name="text">
         <string>...</string>
        </property>
@@ -45,6 +48,12 @@
         <iconset resource="../../../../resources/images.qrc">
          <normaloff>:/images/arrow-up.png</normaloff>:/images/arrow-up.png</iconset>
        </property>
+       <property name="iconSize">
+        <size>
+         <width>32</width>
+         <height>32</height>
+        </size>
+       </property>
       </widget>
      </item>
      <item>
@@ -72,6 +81,12 @@
         <iconset resource="../../../../resources/images.qrc">
          <normaloff>:/images/minus.png</normaloff>:/images/minus.png</iconset>
        </property>
+       <property name="iconSize">
+        <size>
+         <width>32</width>
+         <height>32</height>
+        </size>
+       </property>
       </widget>
      </item>
      <item>
@@ -99,6 +114,12 @@
         <iconset resource="../../../../resources/images.qrc">
          <normaloff>:/images/plus.png</normaloff>:/images/plus.png</iconset>
        </property>
+       <property name="iconSize">
+        <size>
+         <width>32</width>
+         <height>32</height>
+        </size>
+       </property>
       </widget>
      </item>
      <item>
@@ -126,6 +147,12 @@
         <iconset resource="../../../../resources/images.qrc">
          <normaloff>:/images/edit_input.png</normaloff>:/images/edit_input.png</iconset>
        </property>
+       <property name="iconSize">
+        <size>
+         <width>32</width>
+         <height>32</height>
+        </size>
+       </property>
       </widget>
      </item>
      <item>
@@ -143,6 +170,9 @@
      </item>
      <item>
       <widget class="QToolButton" name="column_down">
+       <property name="toolTip">
+        <string>Move column down</string>
+       </property>
        <property name="text">
         <string>...</string>
        </property>
@@ -150,6 +180,12 @@
         <iconset resource="../../../../resources/images.qrc">
          <normaloff>:/images/arrow-down.png</normaloff>:/images/arrow-down.png</iconset>
        </property>
+       <property name="iconSize">
+        <size>
+         <width>32</width>
+         <height>32</height>
+        </size>
+       </property>
       </widget>
      </item>
     </layout>