diff --git a/source/Ox/js/Format.js b/source/Ox/js/Format.js
index 334e87d3..a489e3c1 100644
--- a/source/Ox/js/Format.js
+++ b/source/Ox/js/Format.js
@@ -122,7 +122,7 @@ Ox.formatDate <f> Formats a date according to a format string
 
 Ox.formatDate = function(date, str, utc) {
     // fixme: date and utc are optional, date can be date, number or string
-    if (date == '') {
+    if (date === '') {
         return '';
     }
     date = Ox.makeDate(date);