diff --git a/src/libs/compat/freebsd11_network/compat/sys/mutex.h b/src/libs/compat/freebsd11_network/compat/sys/mutex.h
index 757496a6a2..9fded57c0f 100644
--- a/src/libs/compat/freebsd11_network/compat/sys/mutex.h
+++ b/src/libs/compat/freebsd11_network/compat/sys/mutex.h
@@ -67,6 +67,7 @@ mtx_trylock(struct mtx* mutex)
 			return 0;
 		return 1;
 	}
+	return 0;
 }