diff --git a/include/class.orm.php b/include/class.orm.php
index 2817c66dcfca74c3f194a03c34afe84a3156b47b..4a6102de98027654ee6bcca7286f5df7b72952ef 100644
--- a/include/class.orm.php
+++ b/include/class.orm.php
@@ -786,7 +786,7 @@ class MySqlCompiler extends SqlCompiler {
 
     function __contains($a, $b) {
         # {%a} like %{$b}%
-        return sprintf('%s LIKE %s', $a, $this->input("%$b%"));
+        return sprintf('%s LIKE %s', $a, $this->input($b = "%$b%"));
     }
 
     function __in($a, $b) {