diff --git a/src/files.c b/src/files.c
index 74fe41466..0a0180980 100644
--- a/src/files.c
+++ b/src/files.c
@@ -3337,7 +3337,7 @@ const char *filename;
 
 void
 read_tribute(tribsection, tribtitle, tribpassage)
-char *tribsection, *tribtitle;
+const char *tribsection, *tribtitle;
 int  tribpassage;
 {
     dlb *fp;