diff --git a/packages/runner/src/builder/module.ts b/packages/runner/src/builder/module.ts
index 4a5645b80..4c949ff5b 100644
--- a/packages/runner/src/builder/module.ts
+++ b/packages/runner/src/builder/module.ts
@@ -123,17 +123,8 @@ export function handler<E, T>(
   handler?: (event: E, props: T) => any,
 ): HandlerFactory<T, E> {
   if (typeof eventSchema === "function") {
-    if (
-      stateSchema && typeof stateSchema === "object" &&
-      "proxy" in stateSchema && stateSchema.proxy === true
-    ) {
-      handler = eventSchema;
-      eventSchema = stateSchema = undefined;
-    } else {
-      throw new Error(
-        "invalid handler, no schema provided - did you forget to enable CTS?",
-      );
-    }
+    handler = eventSchema;
+    eventSchema = stateSchema = undefined;
   }
 
   const schema: JSONSchema | undefined = eventSchema || stateSchema
diff --git a/packages/runner/test/module.test.ts b/packages/runner/test/module.test.ts
index 2bdda9121..08f84554c 100644
--- a/packages/runner/test/module.test.ts
+++ b/packages/runner/test/module.test.ts
@@ -100,7 +100,6 @@ describe("module", () => {
           props.x = event.clientX;
           props.y = event.clientY;
         },
-        { proxy: true },
       );
       expect(typeof clickHandler).toBe("function");
       expect(isModule(clickHandler)).toBe(true);
@@ -112,7 +111,6 @@ describe("module", () => {
           props.x = event.clientX;
           props.y = event.clientY;
         },
-        { proxy: true },
       );
       const stream = clickHandler({ x: opaqueRef(10), y: opaqueRef(20) });
       expect(isOpaqueRef(stream)).toBe(true);
@@ -203,7 +201,6 @@ describe("module", () => {
           props.x = event.clientX;
           props.y = event.clientY;
         },
-        { proxy: true },
       );
       const stream = clickHandler.with({ x: opaqueRef(10), y: opaqueRef(20) });
       expect(isOpaqueRef(stream)).toBe(true);
diff --git a/recipes/simpleValue.tsx b/recipes/simpleValue.tsx
index 7cabea7ce..ecad4f5d1 100644
--- a/recipes/simpleValue.tsx
+++ b/recipes/simpleValue.tsx
@@ -1,4 +1,3 @@
-/// <cts-enable />
 import {
   Cell,
   derive,