diff --git a/rte.py b/rte.py
index 0eca2e4..5b7c509 100644
--- a/rte.py
+++ b/rte.py
@@ -25,11 +25,17 @@ class Rte(Plugin):
         await evt.mark_read()
         resp = await self.http.post(self.config["auth_url"], headers={'Authorization' : 'Basic ' + self.config["token"]})
         ans = await resp.text()
+
         objet = json.loads(ans)
         bearer = objet["access_token"]
 
         resp = await self.http.get(self.config["ecowatt_url"], headers={'Authorization' : 'Bearer ' + bearer})
         ans = await resp.text()
+        try:
+            resp.raise_for_status()
+        except aiohttp.ClientError as error:
+            await evt.respond(str(error))
+            return
         objet = json.loads(ans)
         signals = objet["signals"]
         for signal in signals: