diff --git a/manager/allocator/cnmallocator/manager.go b/manager/allocator/cnmallocator/manager.go
index 0f86efd4ad..e285ac4e0f 100644
--- a/manager/allocator/cnmallocator/manager.go
+++ b/manager/allocator/cnmallocator/manager.go
@@ -11,8 +11,8 @@ type manager struct {
 	networkType string
 }
 
-func StubManagerInit(networkType string) func(dc driverapi.DriverCallback, config map[string]interface{}) error {
-	return func(dc driverapi.DriverCallback, config map[string]interface{}) error {
+func StubManagerInit(networkType string) func(dc driverapi.DriverCallback, _ map[string]interface{}) error {
+	return func(dc driverapi.DriverCallback, _ map[string]interface{}) error {
 		return RegisterManager(dc, networkType)
 	}
 }