diff --git a/src/normal.c b/src/normal.c
index 1b514b3..a19771b 100644
--- a/src/normal.c
+++ b/src/normal.c
@@ -4936,13 +4936,15 @@
 
 		/* "zx": re-apply 'foldlevel' and open folds at the cursor */
     case 'x':	curwin->w_p_fen = TRUE;
-		newFoldLevel();		/* update right now */
+		curwin->w_foldinvalid = TRUE;	/* recompute folds */
+		newFoldLevel();			/* update right now */
 		foldOpenCursor();
 		break;
 
 		/* "zX": undo manual opens/closes, re-apply 'foldlevel' */
     case 'X':	curwin->w_p_fen = TRUE;
-		old_fdl = -1;		/* force an update */
+		curwin->w_foldinvalid = TRUE;	/* recompute folds */
+		old_fdl = -1;			/* force an update */
 		break;
 
 		/* "zm": fold more */
diff --git a/src/version.c b/src/version.c
index 453a23b..1f57dd7 100644
--- a/src/version.c
+++ b/src/version.c
@@ -682,6 +682,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    421,
+/**/
     420,
 /**/
     419,