diff --git a/starlette/middleware/exceptions.py b/starlette/middleware/exceptions.py
index d708929e3..981d2fcae 100644
--- a/starlette/middleware/exceptions.py
+++ b/starlette/middleware/exceptions.py
@@ -28,7 +28,7 @@ def __init__(
             HTTPException: self.http_exception,
             WebSocketException: self.websocket_exception,
         }
-        if handlers is not None:
+        if handlers is not None:  # pragma: no branch
             for key, value in handlers.items():
                 self.add_exception_handler(key, value)