diff --git a/scripts/kconfig/lkc_proto.h b/scripts/kconfig/lkc_proto.h
index e195c45..a263746 100644
--- a/scripts/kconfig/lkc_proto.h
+++ b/scripts/kconfig/lkc_proto.h
@@ -39,4 +39,4 @@
 
 /* expr.c */
 P(expr_compare_type,int,(enum expr_type t1, enum expr_type t2));
-P(expr_print,void,(struct expr *e, void (*fn)(void *, const char *), void *data, int prevtoken));
+P(expr_print,void,(struct expr *e, void (*fn)(void *, struct symbol *, const char *), void *data, int prevtoken));