diff --git a/src/flows/channel-setup.test.ts b/src/flows/channel-setup.test.ts
index 9f13e677252..b5057412416 100644
--- a/src/flows/channel-setup.test.ts
+++ b/src/flows/channel-setup.test.ts
@@ -78,7 +78,7 @@ function makePluginRegistry(overrides: Partial<PluginRegistry> = {}): PluginRegi
   } as unknown as PluginRegistry;
 }
 
-function callArg<T>(mock: { mock: { calls: unknown[][] } }, index = 0): T {
+function callArg<T>(mock: { mock: { calls: unknown[][] } }, index = 0, _type?: (value: T) => T): T {
   const call = mock.mock.calls[index];
   expect(call).toBeDefined();
   return call?.[0] as T;
diff --git a/src/gateway/server-methods/skills-upload.test.ts b/src/gateway/server-methods/skills-upload.test.ts
index ed8553be7ba..382b460160f 100644
--- a/src/gateway/server-methods/skills-upload.test.ts
+++ b/src/gateway/server-methods/skills-upload.test.ts
@@ -140,7 +140,7 @@ function expectError(result: CallResult, code: string, message: string): void {
   expect(result.error?.message).toBe(message);
 }
 
-function firstCallArg<T>(mock: { mock: { calls: unknown[][] } }): T {
+function firstCallArg<T>(mock: { mock: { calls: unknown[][] } }, _type?: (value: T) => T): T {
   const call = mock.mock.calls[0];
   expect(call).toBeDefined();
   return call?.[0] as T;