diff --git a/src/screen.c b/src/screen.c
index b16bd87..f8d283f 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -2424,7 +2424,7 @@
     linenr_T	lnum,
     int		row)
 {
-    char_u	buf[51];
+    char_u	buf[FOLD_TEXT_LEN];
     pos_T	*top, *bot;
     linenr_T	lnume = lnum + fold_count - 1;
     int		len;