diff --git a/stb/stb_image.h b/stb/stb_image.h
index a632d543..811e915c 100644
--- a/stb/stb_image.h
+++ b/stb/stb_image.h
@@ -7017,7 +7017,7 @@ static void *stbi__load_gif_main(stbi__context *s, int **delays, int *x, int *y,
             }
             memcpy( out + ((layers - 1) * stride), u, stride );
             if (layers >= 2) {
-               two_back = out - 2 * stride;
+               two_back = out + (layers - 2) * stride;
             }
 
             if (delays) {