diff --git a/lib/oga/xpath/evaluator.rb b/lib/oga/xpath/evaluator.rb
index 07cd721..8b1c72a 100644
--- a/lib/oga/xpath/evaluator.rb
+++ b/lib/oga/xpath/evaluator.rb
@@ -1693,7 +1693,7 @@ module Oga
 
         return true if name == STAR
 
-        xml_node.name == name || xml_node.name.downcase == name.downcase 
+        xml_node.name == name || xml_node.name.casecmp(name).zero?
       end
 
       ##