diff --git a/lib/rack/pact_broker/accepts_html_filter.rb b/lib/rack/pact_broker/accepts_html_filter.rb
index 29d9b5a21..d0ff21e8c 100644
--- a/lib/rack/pact_broker/accepts_html_filter.rb
+++ b/lib/rack/pact_broker/accepts_html_filter.rb
@@ -1,29 +1,29 @@
+# Decides whether this is a browser request or a request for the API
 module Rack
   module PactBroker
     class AcceptsHtmlFilter
-
       def initialize app
         @app = app
       end
 
       def call env
-        if accepts_html_and_not_json_or_csv env
+        if accepts_web_content_types_and_not_api_media env
           @app.call(env)
         else
           [404, {},[]]
         end
       end
 
-      def accepts_html_and_not_json_or_csv env
+      def accepts_web_content_types_and_not_api_media env
         accept = env['HTTP_ACCEPT'] || ''
-        accepts_html(accept) && !accepts_json_or_csv(accept)
+        accepts_web_content_types(accept) && !accepts_api_content_types(accept)
       end
 
-      def accepts_html(accept)
-        accept.include?("html")
+      def accepts_web_content_types(accept)
+        accept.include?("*/*") || accept.include?("html") || accept.include?("text/css") || accept.include?("text/javascript")
       end
 
-      def accepts_json_or_csv accept
+      def accepts_api_content_types accept
         accept.include?("json") || accept.include?("csv")
       end
     end
diff --git a/lib/rack/pact_broker/convert_404_to_hal.rb b/lib/rack/pact_broker/convert_404_to_hal.rb
index 098547516..13e6456e2 100644
--- a/lib/rack/pact_broker/convert_404_to_hal.rb
+++ b/lib/rack/pact_broker/convert_404_to_hal.rb
@@ -9,7 +9,7 @@ def initialize app
       def call env
         response = @app.call(env)
 
-        if response.first == 404 && response[1]['Content-Type'] == 'text/html' && !(env['HTTP_ACCEPT'] =~ /html/)
+        if response.first == 404 && response[1]['Content-Type'] == 'text/html' && !(env['HTTP_ACCEPT'] =~ /html|javascript|css/)
           [404, { 'Content-Type' => 'application/hal+json'},[]]
         else
           response
diff --git a/lib/rack/pact_broker/convert_file_extension_to_accept_header.rb b/lib/rack/pact_broker/convert_file_extension_to_accept_header.rb
index f47a3d373..f2f4b1585 100644
--- a/lib/rack/pact_broker/convert_file_extension_to_accept_header.rb
+++ b/lib/rack/pact_broker/convert_file_extension_to_accept_header.rb
@@ -11,9 +11,7 @@ class ConvertFileExtensionToAcceptHeader
         ".csv" => "text/csv",
         ".svg" => "image/svg+xml",
         ".json" => "application/hal+json",
-        ".yaml" => "application/yaml",
-        ".css"  => "text/css",
-        ".js" => "text/javascript"
+        ".yaml" => "application/yaml"
       }
 
       def initialize app