diff --git a/crates/bevy_pbr/src/lib.rs b/crates/bevy_pbr/src/lib.rs
index 2460a0e0f67df..32dee04f3419b 100644
--- a/crates/bevy_pbr/src/lib.rs
+++ b/crates/bevy_pbr/src/lib.rs
@@ -166,6 +166,7 @@ impl Plugin for PbrPlugin {
         );
 
         app.register_asset_reflect::<StandardMaterial>()
+            .register_type::<AlphaMode>()
             .register_type::<AmbientLight>()
             .register_type::<Cascade>()
             .register_type::<CascadeShadowConfig>()