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-rw-r--r--actionpack/lib/action_dispatch/http/mime_negotiation.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/actionpack/lib/action_dispatch/http/mime_negotiation.rb b/actionpack/lib/action_dispatch/http/mime_negotiation.rb
index e9b25339dc..0a58ce2b96 100644
--- a/actionpack/lib/action_dispatch/http/mime_negotiation.rb
+++ b/actionpack/lib/action_dispatch/http/mime_negotiation.rb
@@ -164,7 +164,7 @@ module ActionDispatch
end
def format_from_path_extension
- path = @env['action_dispatch.original_path'] || @env['PATH_INFO']
+ path = get_header('action_dispatch.original_path') || get_header('PATH_INFO')
if match = path && path.match(/\.(\w+)\z/)
Mime[match.captures.first]
end