diff --git a/administrator/components/com_users/forms/mail.xml b/administrator/components/com_users/forms/mail.xml
index 6f6d180ead097..04df677310635 100644
--- a/administrator/components/com_users/forms/mail.xml
+++ b/administrator/components/com_users/forms/mail.xml
@@ -28,7 +28,7 @@
 			type="usergrouplist"
 			label="COM_USERS_MAIL_FIELD_GROUP_LABEL"
 			default="0"
-			size="10"
+			size="1"
 			>
 			<option value="0">COM_USERS_MAIL_FIELD_VALUE_ALL_USERS_GROUPS</option>
 		</field>