diff --git a/go/src/v.io/x/js.core/test_service/test_serviced/test_serviced.go b/go/src/v.io/x/js.core/test_service/test_serviced/test_serviced.go
index 7d51839..4377378 100644
--- a/go/src/v.io/x/js.core/test_service/test_serviced/test_serviced.go
+++ b/go/src/v.io/x/js.core/test_service/test_serviced/test_serviced.go
@@ -41,7 +41,7 @@
 	return disp
 }
 
-func (sd *testServiceDispatcher) Lookup(suffix string) (interface{}, security.Authorizer, error) {
+func (sd *testServiceDispatcher) Lookup(_ *context.T, suffix string) (interface{}, security.Authorizer, error) {
 	authorizer := openAuthorizer{}
 
 	if strings.HasPrefix(suffix, "cache") {