diff --git a/src/eval.c b/src/eval.c
index 5b5bfbc..8dc74b9 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -16225,7 +16225,7 @@
 	curwin->w_curswant = get_dict_number(dict, (char_u *)"curswant");
 	curwin->w_set_curswant = FALSE;
 
-	curwin->w_topline = get_dict_number(dict, (char_u *)"topline");
+	set_topline(curwin, get_dict_number(dict, (char_u *)"topline"));
 #ifdef FEAT_DIFF
 	curwin->w_topfill = get_dict_number(dict, (char_u *)"topfill");
 #endif