diff --git a/ext/c/lexer.rl b/ext/c/lexer.rl
index 9b50826..c0abc36 100644
--- a/ext/c/lexer.rl
+++ b/ext/c/lexer.rl
@@ -38,7 +38,7 @@ ID id_literal_html_element_p;
  */
 void liboga_xml_lexer_callback(
     VALUE self,
-    VALUE name,
+    ID name,
     rb_encoding *encoding,
     const char *ts,
     const char *te