diff --git a/parse.y b/parse.y
index 388c2a5..65fda3d 100644
--- a/parse.y
+++ b/parse.y
@@ -57,6 +57,8 @@ static size_t maxrules;
 
 int parse_errors = 0;
 
+#define yyerror yyerror
+#define yylex yylex
 static void yyerror(const char *, ...);
 static int yylex(void);