diff --git a/src/frontends/qt4/ui/PrefEditUi.ui b/src/frontends/qt4/ui/PrefEditUi.ui
index 19e023b46f..a17a274143 100644
--- a/src/frontends/qt4/ui/PrefEditUi.ui
+++ b/src/frontends/qt4/ui/PrefEditUi.ui
@@ -42,6 +42,9 @@
        <layout class="QGridLayout" name="gridLayout_4" >
         <item row="0" column="0" >
          <widget class="QLabel" name="label_3" >
+          <property name="toolTip" >
+           <string>Configure the width of the text cursor. Automatic zoom-controlled cursor width used when set to 0.</string>
+          </property>
           <property name="text" >
            <string>Cursor width (&amp;pixels):</string>
           </property>