1 files changed, 3 insertions, 3 deletions

diff --git a/hw/vga.c b/hw/vga.c
index ec7a7c3a5..31bf36986 100644
--- a/hw/vga.c
+++ b/hw/vga.c
@@ -1844,8 +1844,7 @@ static void vga_update_display(void *opaque)
     if (ds_get_bits_per_pixel(s->ds) == 0) {
         /* nothing to do */
     } else {
-        full_update = s->full_update;
-        s->full_update = 0;
+        full_update = 0;
         if (!(s->ar_index & 0x20)) {
             graphic_mode = GMODE_BLANK;
         } else {
@@ -1878,7 +1877,8 @@ static void vga_invalidate_display(void *opaque)
 {
     VGAState *s = (VGAState *)opaque;
 
-    s->full_update = 1;
+    s->last_width = -1;
+    s->last_height = -1;
 }
 
 void vga_reset(void *opaque)