diff --git a/classes/Design.php b/classes/Design.php
index a8fdb72191..f4834c714e 100644
--- a/classes/Design.php
+++ b/classes/Design.php
@@ -107,7 +107,7 @@ class Design extends Memcached_DataObject
 
     static function toWebColor($color)
     {
-        if ($color == null) {
+        if ($color === null || $color === '') {
             return null;
         }