diff --git a/ext/pdo/pdo_stmt.c b/ext/pdo/pdo_stmt.c
index c6e4b481a5b..830e0525424 100755
--- a/ext/pdo/pdo_stmt.c
+++ b/ext/pdo/pdo_stmt.c
@@ -91,7 +91,10 @@ static inline int rewrite_name_to_position(pdo_stmt_t *stmt, struct pdo_bound_pa
 			/* this is not an error here */
 			return 1;
 		}
-
+		if (!param->name) {
+			return 1;
+		}
+    
 		zend_hash_internal_pointer_reset(stmt->bound_param_map);
 		while (SUCCESS == zend_hash_get_current_data(stmt->bound_param_map, (void**)&name)) {
 			if (strcmp(name, param->name)) {