1 files changed, 1 insertions, 1 deletions
diff --git a/parse.y b/parse.y
index 2aff7adaa9..ddfca76626 100644
--- a/parse.y
+++ b/parse.y
@@ -7070,7 +7070,7 @@ parser_yylex(struct parser_params *parser)
 
       default:
 	if (!parser_is_identchar()) {
-	    rb_compile_error(PARSER_ARG  "Invalid char `\\%03o' in expression", c);
+	    rb_compile_error(PARSER_ARG  "Invalid char `\\x%02x' in expression", c);
 	    goto retry;
 	}