diff --git a/pyamf/remoting/client/__init__.py b/pyamf/remoting/client/__init__.py
index 283b955d..5332adcc 100644
--- a/pyamf/remoting/client/__init__.py
+++ b/pyamf/remoting/client/__init__.py
@@ -495,9 +495,9 @@ def _getResponse(self, http_request):
             self.logger.debug('Response: %s', response)
 
         if remoting.APPEND_TO_GATEWAY_URL in response.headers:
-            self.original_url += response.headers[
+            self.original_url += str(response.headers[
                 remoting.APPEND_TO_GATEWAY_URL
-            ]
+            ])
 
             self._setUrl(self.original_url)