diff --git a/phpBB/styles/prosilver/template/ucp_prefs_personal.html b/phpBB/styles/prosilver/template/ucp_prefs_personal.html
index 8111496dcb..a5b4852af8 100644
--- a/phpBB/styles/prosilver/template/ucp_prefs_personal.html
+++ b/phpBB/styles/prosilver/template/ucp_prefs_personal.html
@@ -117,7 +117,7 @@
 		}
 	}
 
-	customDates();
+	window.onload = customDates;
 // ]]>
 </script>