diff --git a/package/signal/src/signal.ts b/package/signal/src/signal.ts
index d4c0649e3..11c7e3ea1 100644
--- a/package/signal/src/signal.ts
+++ b/package/signal/src/signal.ts
@@ -140,7 +140,7 @@ export function requestSignal<SignalName extends keyof VatrRequestSignals>(
  */
 export function setSignalProvider<SignalName extends keyof VatrRequestSignals>(
     signalName: SignalName,
-    signalCallback: (detail: VatrRequestSignals[SignalName]) => void | Promise<void>,
+    signalCallback: (signalValue: VatrRequestSignals[SignalName]) => void | Promise<void>,
 ): symbol {
   log('setSignalProvider(%s)', signalName);
   // @TODO: refactor with removeSignalProvider
diff --git a/package/signal/src/type.ts b/package/signal/src/type.ts
index a14290936..5ec0e444c 100644
--- a/package/signal/src/type.ts
+++ b/package/signal/src/type.ts
@@ -66,7 +66,7 @@ export interface DispatchOptions
  * Signal listeners callback function type.
  */
 export type ListenerCallback<SignalName extends keyof VatrSignals> =
-  (detail: VatrSignals[SignalName]) => void | Promise<void>;
+  (signalValue: VatrSignals[SignalName]) => void | Promise<void>;
 
 /**
  * Signal listeners object in database.