diff --git a/sentry_sdk/integrations/asgi.py b/sentry_sdk/integrations/asgi.py
index 6bd1c146a0..cfe8c6f8d1 100644
--- a/sentry_sdk/integrations/asgi.py
+++ b/sentry_sdk/integrations/asgi.py
@@ -130,7 +130,7 @@ async def _run_app(self, scope, callback):
 
                 if ty in ("http", "websocket"):
                     transaction = Transaction.continue_from_headers(
-                        dict(scope["headers"]),
+                        self._get_headers(scope),
                         op="{}.server".format(ty),
                     )
                 else: