diff --git a/packages/effect-fc/src/SynchronizedForm.ts b/packages/effect-fc/src/SynchronizedForm.ts
index 07ff2a3..b0d48e3 100644
--- a/packages/effect-fc/src/SynchronizedForm.ts
+++ b/packages/effect-fc/src/SynchronizedForm.ts
@@ -147,7 +147,7 @@ export class SynchronizedFormImpl<
         )
     }
 
-    get run(): Effect.Effect<void, TER> {
+    get run(): Effect.Effect<void, TER, never> {
         return this.runSemaphore.withPermits(1)(Effect.provide(
             Stream.runForEach(
                 Stream.drop(this.target.changes, 1),