diff --git a/Python/Python-ast.c b/Python/Python-ast.c
index 54c4e01..c37dda7 100644
--- a/Python/Python-ast.c
+++ b/Python/Python-ast.c
@@ -537,8 +537,9 @@
 {
     int i, result;
     PyObject *s, *l = PyTuple_New(num_fields);
-    if (!l) return 0;
-    for(i = 0; i < num_fields; i++) {
+    if (!l)
+        return 0;
+    for (i = 0; i < num_fields; i++) {
         s = PyUnicode_FromString(attrs[i]);
         if (!s) {
             Py_DECREF(l);