1 files changed, 1 insertions, 1 deletions
diff --git a/lib/open-uri.rb b/lib/open-uri.rb
index 84acdb9984..75ce63a288 100644
--- a/lib/open-uri.rb
+++ b/lib/open-uri.rb
@@ -501,7 +501,7 @@ module URI
       if proxy_uri
         proxy_uri = URI.parse(proxy_uri)
         unless URI::HTTP === proxy_uri
-          raise "Non-http proxy URI: #{proxy_uri}"
+          raise "Non-HTTP proxy URI: #{proxy_uri}"
         end
         name = 'no_proxy'
         if no_proxy = ENV[name] || ENV[name.upcase]