diff --git a/core/api/src/test/java/org/onosproject/store/service/StorageServiceAdapter.java b/core/api/src/test/java/org/onosproject/store/service/StorageServiceAdapter.java
index ec04e33..554cc72 100644
--- a/core/api/src/test/java/org/onosproject/store/service/StorageServiceAdapter.java
+++ b/core/api/src/test/java/org/onosproject/store/service/StorageServiceAdapter.java
@@ -53,4 +53,9 @@
     public TransactionContextBuilder transactionContextBuilder() {
         return null;
     }
+
+    @Override
+    public LeaderElectorBuilder leaderElectorBuilder() {
+        return null;
+    }
 }