diff --git a/Python/compile.c b/Python/compile.c
index f02c81a..d81fef3 100644
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -2323,7 +2323,7 @@
 		return compiler_error(c, "can not assign to __debug__");
 	}
 
-mangled = _Py_Mangle(c->u->u_private, name);
+	mangled = _Py_Mangle(c->u->u_private, name);
 	if (!mangled)
 		return 0;