diff --git a/skybox/src/lib.rs b/skybox/src/lib.rs
index 2715cdf..a351e14 100644
--- a/skybox/src/lib.rs
+++ b/skybox/src/lib.rs
@@ -46,6 +46,7 @@ impl SkyBox {
             images.top.try_into()?,
             images.bottom.try_into()?,
         ])?
+        .format(VK_FORMAT_R8G8B8A8_UNORM)
         .max_mip_map_levels()
         .attach_pretty_sampler(context.device())?
         .build(context.device(), context.queue())?;