diff --git a/src/Illuminate/Database/Query/Builder.php b/src/Illuminate/Database/Query/Builder.php
index f860283d36a2..279a0f538ff3 100755
--- a/src/Illuminate/Database/Query/Builder.php
+++ b/src/Illuminate/Database/Query/Builder.php
@@ -174,8 +174,9 @@ class Builder {
 		'=', '<', '>', '<=', '>=', '<>', '!=',
 		'like', 'not like', 'between', 'ilike',
 		'&', '|', '^', '<<', '>>',
-		'rlike', 'regexp', 'not regexp',
-		'~', '~*', '!~', '!~*',
+		'rlike', 'regexp', 'not regexp', 
+		'~', '~*', '!~', '!~*', 'similar to',
+                'not similar to',
 	);
 
 	/**