diff --git a/core/api/src/main/java/org/onosproject/net/group/GroupService.java b/core/api/src/main/java/org/onosproject/net/group/GroupService.java
index 692bde8..47e0882 100644
--- a/core/api/src/main/java/org/onosproject/net/group/GroupService.java
+++ b/core/api/src/main/java/org/onosproject/net/group/GroupService.java
@@ -115,7 +115,7 @@
     /**
      * Purges all group entries.
      */
-    default void purgeGroupEntries() {};
+    default void purgeGroupEntries() {}
 
     /**
      * Deletes a group associated to an application cookie.
diff --git a/core/api/src/main/java/org/onosproject/net/group/GroupStore.java b/core/api/src/main/java/org/onosproject/net/group/GroupStore.java
index 776cc60..0c0c06c 100644
--- a/core/api/src/main/java/org/onosproject/net/group/GroupStore.java
+++ b/core/api/src/main/java/org/onosproject/net/group/GroupStore.java
@@ -127,7 +127,7 @@
     /**
      * Removes all group entries from store.
      */
-    default void purgeGroupEntries() {};
+    default void purgeGroupEntries() {}
 
     /**
      * A group entry that is present in switch but not in the store.
diff --git a/core/store/dist/src/main/java/org/onosproject/store/group/impl/DistributedGroupStore.java b/core/store/dist/src/main/java/org/onosproject/store/group/impl/DistributedGroupStore.java
index c6ee95e..28e3302 100644
--- a/core/store/dist/src/main/java/org/onosproject/store/group/impl/DistributedGroupStore.java
+++ b/core/store/dist/src/main/java/org/onosproject/store/group/impl/DistributedGroupStore.java
@@ -249,7 +249,7 @@
         } else {
             return groupTopic;
         }
-    };
+    }
 
     /**
      * Returns the group store eventual consistent key map.