diff --git a/server.py b/server.py
index 64ca3e626..4b4265f01 100644
--- a/server.py
+++ b/server.py
@@ -158,7 +158,7 @@ async def _exc_handler(request: Request, exc: Exception, template_name: str):
 
 def github_url_for_exc(exc: Exception) -> str | None:
     base_dir = str(settings.BASE_DIR)
-    ref = os.environ.get("CAPROVER_GIT_COMMIT_SHA") or "master"
+    ref = (os.environ.get("CAPROVER_GIT_COMMIT_SHA") or "master").strip()
     for frame in reversed(traceback.extract_tb(exc.__traceback__)):
         if not frame.filename.startswith(base_dir):
             continue