diff --git a/miniapp/assets/selfmeasure.js b/miniapp/assets/selfmeasure.js
index 999640c..11ba3b5 100644
--- a/miniapp/assets/selfmeasure.js
+++ b/miniapp/assets/selfmeasure.js
@@ -20,6 +20,7 @@ const SelfMeasureScreen = (function () {
         headers: { "Content-Type": "application/json" },
         body: JSON.stringify({ initData: tg?.initData || "", initDataUnsafe: tg?.initDataUnsafe || null, ...body }),
       });
+      if (!res.ok) throw new Error(`Ошибка сервера (${res.status})`);
       return await res.json();
     } catch (e) {
       if (e.name === "AbortError") throw new Error("Сервер не отвечает");