diff options
Diffstat (limited to 'actionpack/lib/action_dispatch/middleware')
| -rw-r--r-- | actionpack/lib/action_dispatch/middleware/best_standards_support.rb | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/actionpack/lib/action_dispatch/middleware/best_standards_support.rb b/actionpack/lib/action_dispatch/middleware/best_standards_support.rb index d338996240..94efeb79fa 100644 --- a/actionpack/lib/action_dispatch/middleware/best_standards_support.rb +++ b/actionpack/lib/action_dispatch/middleware/best_standards_support.rb @@ -17,7 +17,9 @@ module ActionDispatch status, headers, body = @app.call(env) if headers["X-UA-Compatible"] && @header - headers["X-UA-Compatible"] << "," << @header.to_s + unless headers["X-UA-Compatible"][@header] + headers["X-UA-Compatible"] << "," << @header.to_s + end else headers["X-UA-Compatible"] = @header end |