diff --git a/Python/compile.c b/Python/compile.c
index 4373422..c69a95f 100644
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -130,8 +130,8 @@
 		filename = PyString_AsString(co->co_filename);
 	if (co->co_name && PyString_Check(co->co_name))
 		name = PyString_AsString(co->co_name);
-	sprintf(buf, "<code object %.100s at %lx, file \"%.300s\", line %d>",
-		name, (long)co, filename, lineno);
+	sprintf(buf, "<code object %.100s at %p, file \"%.300s\", line %d>",
+		name, co, filename, lineno);
 	return PyString_FromString(buf);
 }