diff --git a/ibase_query.c b/ibase_query.c
index d9070b8..c8968ff 100644
--- a/ibase_query.c
+++ b/ibase_query.c
@@ -1959,6 +1959,7 @@ PHP_FUNCTION(ibase_free_query)
 	}
 
 	zend_list_close(Z_RES_P(query_arg));
+	zend_list_delete(Z_RES_P(query_arg));
 	RETURN_TRUE;
 }
 /* }}} */