diff --git a/packages/composable-controller/src/ComposableController.ts b/packages/composable-controller/src/ComposableController.ts
index b8f67822455..c0c381295dc 100644
--- a/packages/composable-controller/src/ComposableController.ts
+++ b/packages/composable-controller/src/ComposableController.ts
@@ -173,6 +173,7 @@ export class ComposableController<
         (childState: StateConstraint) => {
           this.update((state) => {
             // Type assertion is necessary for property assignment to a generic type. This does not pollute or widen the type of the asserted variable.
+            // @ts-expect-error "Type instantiation is excessively deep"
             (state as ComposableControllerStateConstraint)[name] = childState;
           });
         },