lib/grape/http/request.rb in grape-0.11.0 vs lib/grape/http/request.rb in grape-0.12.0

@@ -15,10 +15,10 @@
     end
 
     def headers
       @headers ||= env.dup.inject({}) do |h, (k, v)|
         if k.to_s.start_with? 'HTTP_'
-          k = k[5..-1].gsub('_', '-').downcase.gsub(/^.|[-_\s]./) { |x| x.upcase }
+          k = k[5..-1].tr('_', '-').downcase.gsub(/^.|[-_\s]./) { |x| x.upcase }
           h[k] = v
         end
         h
       end
     end