diff --git a/Modules/_ctypes/ctypes.h b/Modules/_ctypes/ctypes.h
index b71f139f8b5..5d3b9663385 100644
--- a/Modules/_ctypes/ctypes.h
+++ b/Modules/_ctypes/ctypes.h
@@ -31,7 +31,7 @@ union value {
                 long l;
                 float f;
                 double d;
-                PY_LONG_LONG ll;
+                long long ll;
                 long double D;
 };