diff --git a/app/node_main.py b/app/node_main.py
index 9e0662d..d9e838c 100644
--- a/app/node_main.py
+++ b/app/node_main.py
@@ -251,7 +251,7 @@ async def mqtt_lifecycle_manager():
             try:
                 with open(local_path, "rb") as f:
                     files = {"file": (f"{call_id}.mp3", f, "audio/mpeg")}
-                    response = requests.post(f"{MQTT_BROKER}/upload", files=files, data={"node_id": NODE_ID, "call_id": call_id}, timeout=30)
+                    response = requests.post(f"http://{MQTT_BROKER}/upload", files=files, data={"node_id": NODE_ID, "call_id": call_id}, timeout=30)
                     response.raise_for_status()
                     return response.json().get("url")
             except Exception as e: