diff --git a/src/test/test-fdset.c b/src/test/test-fdset.c
index ed83ee18dea..7f52748ccb4 100644
--- a/src/test/test-fdset.c
+++ b/src/test/test-fdset.c
@@ -111,4 +111,6 @@ int main(int argc, char *argv[]) {
         test_fdset_put_dup();
         test_fdset_cloexec();
         test_fdset_close_others();
+
+        return 0;
 }