diff --git a/js/src/run_helpers.ts b/js/src/run_helpers.ts
index 03efe06c2..8a222ec84 100644
--- a/js/src/run_helpers.ts
+++ b/js/src/run_helpers.ts
@@ -91,7 +91,7 @@ export function traceable<WrappedFunc extends (...args: any[]) => any>(
 }
 
 export type TraceableFunction<Inputs extends unknown[], Output> = (
-  ...inputs: [...Inputs, runTree: RunTree | RunTreeConfig]
+  ...inputs: [...params: Inputs, runTree: RunTree | RunTreeConfig]
 ) => Promise<Output>;
 
 export function isTraceableFunction(