diff --git a/lib/fog/aws/requests/iam/list_access_keys.rb b/lib/fog/aws/requests/iam/list_access_keys.rb
index e1872cf75..6a705de5a 100644
--- a/lib/fog/aws/requests/iam/list_access_keys.rb
+++ b/lib/fog/aws/requests/iam/list_access_keys.rb
@@ -52,7 +52,7 @@ module Fog
               response.status = 200
             end
           else
-            Fog::AWS::IAM::NotFound.new("The user with name #{user} cannot be found.")
+            raise Fog::AWS::IAM::NotFound.new("The user with name #{user} cannot be found.")
           end
         end
       end