diff --git a/usr.bin/lex/flex.skl b/usr.bin/lex/flex.skl
index 290c0608dd13..c2ef4f9505cb 100644
--- a/usr.bin/lex/flex.skl
+++ b/usr.bin/lex/flex.skl
@@ -1,7 +1,7 @@
 /* A lexical scanner generated by flex */
 
 /* Scanner skeleton version:
- * $NetBSD: flex.skl,v 1.14 2000/03/17 23:21:45 simonb Exp $
+ * $NetBSD: flex.skl,v 1.15 2000/06/17 11:56:21 assar Exp $
  */
 
 #define FLEX_SCANNER
@@ -314,7 +314,11 @@ extern int yywrap YY_PROTO(( void ));
 
 %-
 #ifndef YY_NO_UNPUT
-static void yyunput YY_PROTO(( int c, char *buf_ptr ));
+static void yyunput YY_PROTO(( int c, char *buf_ptr ))
+#ifdef __GNUC__
+    __attribute__ ((unused))
+#endif
+;
 #endif
 %*