diff --git a/src/fold.c b/src/fold.c
index 5c55b07..8a904f6 100644
--- a/src/fold.c
+++ b/src/fold.c
@@ -2422,8 +2422,8 @@
 							      && flp->lvl > 0)
     {
 	(void)foldFind(gap, startlnum - 1, &fp);
-	if (fp >= ((fold_T *)gap->ga_data) + gap->ga_len
-						   || fp->fd_top >= startlnum)
+	if (fp != NULL && (fp >= ((fold_T *)gap->ga_data) + gap->ga_len
+						   || fp->fd_top >= startlnum))
 	    fp = NULL;
     }