diff --git a/src/calibre/gui2/dialogs/config.ui b/src/calibre/gui2/dialogs/config.ui
index 9aa3fd6971..3f02ffc7f4 100644
--- a/src/calibre/gui2/dialogs/config.ui
+++ b/src/calibre/gui2/dialogs/config.ui
@@ -670,7 +670,7 @@
               <item row="1" column="1" colspan="2" >
                <widget class="QLineEdit" name="relay_host" >
                 <property name="toolTip" >
-                 <string>The hostname if your mail server. For e.g. smtp.gmail.com</string>
+                 <string>The hostname of your mail server. For e.g. smtp.gmail.com</string>
                 </property>
                </widget>
               </item>