diff --git a/src/fold.c b/src/fold.c
index 5e67dd2..a594644 100644
--- a/src/fold.c
+++ b/src/fold.c
@@ -2676,6 +2676,7 @@
     if (fp->fd_len < flp->lnum - fp->fd_top)
     {
 	fp->fd_len = flp->lnum - fp->fd_top;
+	fp->fd_small = MAYBE;
 	fold_changed = TRUE;
     }