diff --git a/src/interval/index.ts b/src/interval/index.ts
index dd85cfd5..7318d711 100644
--- a/src/interval/index.ts
+++ b/src/interval/index.ts
@@ -131,11 +131,11 @@ export function interval<S extends unknown, F extends unknown>({
   return {
     tick,
     isRunning: $isRunning,
-    '@@trigger': {
+    '@@trigger': () => ({
       setup,
       teardown,
       fired: tick,
-    },
+    }),
   };
 }
 
@@ -153,6 +153,10 @@ function toStoreNumber(value: number | Store<number> | unknown): Store<number> {
 /**
  * @see {@link https://withease.pages.dev/protocols/trigger.html}
  */
-type TriggerProtocol = {
-  '@@trigger': { fired: Event<void>; setup: Event<void>; teardown: Event<void> };
+export type TriggerProtocol = {
+  '@@trigger': () => {
+    setup: Event<void>;
+    teardown: Event<void>;
+    fired: Event<unknown> | Event<void>;
+  };
 };
diff --git a/src/interval/interval.fork.test.ts b/src/interval/interval.fork.test.ts
index 33f1e9a0..06007c5a 100644
--- a/src/interval/interval.fork.test.ts
+++ b/src/interval/interval.fork.test.ts
@@ -107,22 +107,22 @@ test('does not leaves unresolved timeout effect, if stopped', async () => {
 describe('@@trigger', () => {
   test('fire tick on start and stop after teardown', async () => {
     const listener = jest.fn();
-    const intervalTrigger = interval({ timeout: 1 });
+    const intervalTrigger = interval({ timeout: 1 })['@@trigger']();
 
     const scope = fork();
 
     const unwatch = createWatch({
-      unit: intervalTrigger['@@trigger'].fired,
+      unit: intervalTrigger.fired,
       fn: listener,
       scope,
     });
 
-    allSettled(intervalTrigger['@@trigger'].setup, { scope });
+    allSettled(intervalTrigger.setup, { scope });
 
     await wait(1);
     expect(listener).toBeCalledTimes(1);
 
-    await allSettled(intervalTrigger['@@trigger'].teardown, { scope });
+    await allSettled(intervalTrigger.teardown, { scope });
 
     await wait(10);
     expect(listener).toBeCalledTimes(1);