diff --git a/lib/rubygems/source.rb b/lib/rubygems/source.rb
index 59dcc2e1e1..bee5681dab 100644
--- a/lib/rubygems/source.rb
+++ b/lib/rubygems/source.rb
@@ -79,7 +79,7 @@ class Gem::Source
       uri
     end
 
-    bundler_api_uri = enforce_trailing_slash(fetch_uri) + "./versions"
+    bundler_api_uri = enforce_trailing_slash(fetch_uri) + "versions"
 
     begin
       fetcher = Gem::RemoteFetcher.fetcher