diff --git a/test-parse-options.c b/test-parse-options.c
index 434e8b892..6f6c65692 100644
--- a/test-parse-options.c
+++ b/test-parse-options.c
@@ -60,7 +60,7 @@ int main(int argc, char **argv)
 		OPT_STRING('o', NULL, &string, "str", "get another string"),
 		OPT_NOOP_NOARG(0, "obsolete"),
 		OPT_SET_PTR(0, "default-string", &string,
-			"set string to default", (unsigned long)"default"),
+			"set string to default", (intptr_t)"default"),
 		OPT_STRING_LIST(0, "list", &list, "str", "add str to list"),
 		OPT_GROUP("Magic arguments"),
 		OPT_ARGUMENT("quux", "means --quux"),