diff --git a/apps/mappingmanagement/api/src/test/java/org/onosproject/mapping/MappingProviderServiceAdapter.java b/apps/mappingmanagement/api/src/test/java/org/onosproject/mapping/MappingProviderServiceAdapter.java
index b5a4311..a5e35af 100644
--- a/apps/mappingmanagement/api/src/test/java/org/onosproject/mapping/MappingProviderServiceAdapter.java
+++ b/apps/mappingmanagement/api/src/test/java/org/onosproject/mapping/MappingProviderServiceAdapter.java
@@ -28,4 +28,9 @@
     public void mappingAdded(MappingEntry mappingEntry, MappingStore.Type type) {
 
     }
+
+    @Override
+    public MappingValue mappingQueried(MappingKey mappingKey) {
+        return null;
+    }
 }