diff --git a/wgpu/src/geometry.rs b/wgpu/src/geometry.rs
index a27cef07..d2ffda53 100644
--- a/wgpu/src/geometry.rs
+++ b/wgpu/src/geometry.rs
@@ -31,7 +31,7 @@ pub enum Geometry {
     Cached(Cache),
 }
 
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, Default)]
 pub struct Cache {
     pub meshes: Option<triangle::Cache>,
     pub images: Option<Arc<[Image]>>,