diff --git a/app/code/community/BL/CustomGrid/Helper/Config.php b/app/code/community/BL/CustomGrid/Helper/Config.php
index 328b636..950d3a4 100644
--- a/app/code/community/BL/CustomGrid/Helper/Config.php
+++ b/app/code/community/BL/CustomGrid/Helper/Config.php
@@ -73,8 +73,8 @@ protected function _getExceptionsListConfig($key)
     
     protected function _matchGridAgainstException($exception, $blockType, $rewritingClassName)
     {
-        return (preg_match($exception['block_type'], $blockType)
-            && preg_match($exception['rewriting_class_name'], $rewritingClassName));
+        return (strpos($exception['block_type'], $blockType)
+            && strpos($exception['rewriting_class_name'], $rewritingClassName));
     }
     
     public function addGridToExclusionsList($blockType, $rewritingClassName, $reinit=false)