diff --git a/lib/standard/lsp/routes.rb b/lib/standard/lsp/routes.rb
index 3afad197..e9f30acd 100644
--- a/lib/standard/lsp/routes.rb
+++ b/lib/standard/lsp/routes.rb
@@ -13,7 +13,7 @@ def initialize(writer, logger, standardizer)
       end
 
       def self.handle(name, &block)
-        define_method("handle_#{name}", &block)
+        define_method(:"handle_#{name}", &block)
       end
 
       def for(name)