diff --git a/util/cpp/main.c b/util/cpp/main.c
index 6472bd6a0..4874c63d6 100644
--- a/util/cpp/main.c
+++ b/util/cpp/main.c
@@ -8,7 +8,6 @@
 #include "file_info.h"
 #include "idfsize.h"
 
-extern struct tokenname tkidf[], tkkey[];
 extern char *symbol2str();
 extern char *getwdir();
 extern char *inctable[];