diff --git a/appl/ftp/ftpd/ls.c b/appl/ftp/ftpd/ls.c
index a0f12ce8b..30d8f93a0 100644
--- a/appl/ftp/ftpd/ls.c
+++ b/appl/ftp/ftpd/ls.c
@@ -268,7 +268,7 @@ make_fileinfo(FILE *out, const char *filename, struct fileinfo *file, int flags)
     }
     if(S_ISLNK(st->st_mode)) {
 	int n;
-	n = readlink((char *)filename, buf, sizeof(buf));
+	n = readlink((char *)filename, buf, sizeof(buf) - 1);
 	if(n >= 0) {
 	    buf[n] = '\0';
 	    file->link = strdup(buf);