diff --git a/library/Class/Catalogue.php b/library/Class/Catalogue.php
index 15cff3d2f4fa83522b069d7e99992594b9db894f..7060916e5344fcc74b38a1c0e855d1e50598b943 100644
--- a/library/Class/Catalogue.php
+++ b/library/Class/Catalogue.php
@@ -477,7 +477,7 @@ class Class_Catalogue extends Storm_Model_Abstract {
 		$cond = trim($cond);
 
 		if ($signe) 
-			return '+(' . $cond . ')';
+			return ' +(' . $cond . ')';
 
 		return ' ' . $cond;
 	}