diff --git a/Include/Python-ast.h b/Include/Python-ast.h
index e14bab5..fc9f65c 100644
--- a/Include/Python-ast.h
+++ b/Include/Python-ast.h
@@ -1,4 +1,4 @@
-/* File automatically generated by Parser/asdl_c.py. */
+// File automatically generated by Parser/asdl_c.py.
 
 #ifndef Py_PYTHON_AST_H
 #define Py_PYTHON_AST_H