diff --git a/lib/net/http/exceptions.rb b/lib/net/http/exceptions.rb
index 933cd64ace..da5f7a70fc 100644
--- a/lib/net/http/exceptions.rb
+++ b/lib/net/http/exceptions.rb
@@ -30,5 +30,4 @@ end
 
 module Net
   deprecate_constant(:HTTPServerException)
-  deprecate_constant(:ProtoServerError)
 end