diff --git a/services/ans/test/unittest/mock/mock_datashare.cpp b/services/ans/test/unittest/mock/mock_datashare.cpp
index 25122bebe1b6a88fee23f3442c40eecd48f34901..4819c72caf9c2be7a7e1c177de18ef32b568b436 100644
--- a/services/ans/test/unittest/mock/mock_datashare.cpp
+++ b/services/ans/test/unittest/mock/mock_datashare.cpp
@@ -233,11 +233,16 @@ public:
 
     void NotifyChange(const Uri &uri) override {}
 
-    void RegisterObserverExtProvider(const Uri &uri, const std::shared_ptr<DataShareObserver> dataObserver,
-        bool isDescendants) override {}
+    int RegisterObserverExtProvider(const Uri &uri, const std::shared_ptr<DataShareObserver> dataObserver,
+        bool isDescendants) override
+    {
+        return 0;
+    }
 
-    void UnregisterObserverExtProvider(const Uri &uri,
-        const std::shared_ptr<DataShareObserver> dataObserver) override {}
+    int UnregisterObserverExtProvider(const Uri &uri, const std::shared_ptr<DataShareObserver> dataObserver) override
+    {
+        return 0;
+    }
 
     void NotifyChangeExtProvider(const DataShareObserver::ChangeInfo &changeInfo) override {}