diff --git a/core/vip.c b/core/vip.c
index c0e33ce..d8d92be 100644
--- a/core/vip.c
+++ b/core/vip.c
@@ -1013,7 +1013,7 @@ static void vipDrawAffine(VB *sim, World *world) {
         y1 = world->gy;
     if (y1 >= 224)
         return;
-    y2 = y1 + world->height;
+    y2 = world->gy + world->height;
     if (y2 <= 0)
         return;
     if (y1 < 0)