1 files changed, 1 insertions, 1 deletions
diff --git a/private.h b/private.h
index 9c7f242f..b86cf619 100644
--- a/private.h
+++ b/private.h
@@ -261,7 +261,7 @@ struct	roffcb {
 	int	(*roffblkheadout)(void *, int);
 	int	(*roffblkbodyin)(void *, int, int *, char **);
 	int	(*roffblkbodyout)(void *, int);
-	int	(*roffspecial)(void *, int, int *, char **, char **);
+	int	(*roffspecial)(void *, int, const char *, char **);
 };
 
 struct	rofftree;