diff --git a/backend/open_webui/utils/webhook.py b/backend/open_webui/utils/webhook.py
index d4bdbdb4f..942e62e85 100644
--- a/backend/open_webui/utils/webhook.py
+++ b/backend/open_webui/utils/webhook.py
@@ -22,7 +22,7 @@ def post_webhook(url: str, message: str, event_data: dict) -> bool:
             payload["content"] = (
                 message
                 if len(message) > 2000
-                else f"{message[: 2000 - 14]}... (truncated)"
+                else f"{message[: 2000 - 20]}... (truncated)"
             )
         # Microsoft Teams Webhooks
         elif "webhook.office.com" in url: