diff --git a/mwclient/errors.py b/mwclient/errors.py
index b428fd1972e433eda0ab25a38912e3f5a9eb9c9c..0fbfed83fa6a63bb085824dd2ecabbb012bf7906 100644
--- a/mwclient/errors.py
+++ b/mwclient/errors.py
@@ -63,7 +63,7 @@ class InvalidResponse(MwClientError):
     def __init__(self, response_text=None):
         self.message = 'Did not get a valid JSON response from the server. Check that ' + \
                        'you used the correct hostname. If you did, the server might ' + \
-                       'be wrongly configured or experience temporary problems.'
+                       'be wrongly configured or experiencing temporary problems.'
         self.response_text = response_text
         MwClientError.__init__(self, self.message, response_text)