diff --git a/src/settingsdialog.ui b/src/settingsdialog.ui
index 3a07d4254..c3f302da8 100644
--- a/src/settingsdialog.ui
+++ b/src/settingsdialog.ui
@@ -65,6 +65,9 @@
              <verstretch>0</verstretch>
             </sizepolicy>
            </property>
+           <property name="placeholderText">
+               <string>e.g. user@example.com</string>
+           </property>
           </widget>
          </item>
          <item>