diff --git a/library/Zend/Pdf/Resource/Image/Png.php b/library/Zend/Pdf/Resource/Image/Png.php
index 4165e3b..f4e7545 100644
--- a/library/Zend/Pdf/Resource/Image/Png.php
+++ b/library/Zend/Pdf/Resource/Image/Png.php
@@ -190,7 +190,7 @@ public function __construct($imageFileName)
                     fseek($imageFile, 4, SEEK_CUR); //4 Byte Ending Sequence
                     break;
 
-                case 'IEND';
+                case 'IEND':
                     break 2; //End the loop too
 
                 default: