1 files changed, 5 insertions, 1 deletions
diff --git a/lib/rubygems/source.rb b/lib/rubygems/source.rb
index 85f5268fa3..4f07beb1f4 100644
--- a/lib/rubygems/source.rb
+++ b/lib/rubygems/source.rb
@@ -67,7 +67,11 @@ class Gem::Source
 
       return -1 if !other.uri
 
-      @uri.to_s <=> other.uri.to_s
+      # Returning 1 here ensures that when sorting a list of sources, the
+      # original ordering of sources supplied by the user is preserved.
+      return 1 unless @uri.to_s == other.uri.to_s
+
+      0
     else
       nil
     end