diff --git a/core/net/src/main/java/org/onosproject/net/intent/impl/CompilingFailed.java b/core/net/src/main/java/org/onosproject/net/intent/impl/CompilingFailed.java
index 34469ff..df3422a 100644
--- a/core/net/src/main/java/org/onosproject/net/intent/impl/CompilingFailed.java
+++ b/core/net/src/main/java/org/onosproject/net/intent/impl/CompilingFailed.java
@@ -18,8 +18,6 @@
 import org.onosproject.net.intent.BatchWrite;
 import org.onosproject.net.intent.Intent;
 
-import java.util.Optional;
-
 import static com.google.common.base.Preconditions.checkNotNull;
 import static org.onosproject.net.intent.IntentState.FAILED;
 
@@ -40,11 +38,6 @@
     }
 
     @Override
-    public Optional<IntentUpdate> execute() {
-        return Optional.empty();
-    }
-
-    @Override
     public void writeAfterExecution(BatchWrite batchWrite) {
         batchWrite.setState(intent, FAILED);
         batchWrite.removeInstalledIntents(intent.id());
diff --git a/core/net/src/main/java/org/onosproject/net/intent/impl/CompletedIntentUpdate.java b/core/net/src/main/java/org/onosproject/net/intent/impl/CompletedIntentUpdate.java
index a2ed4d9..df0b267 100644
--- a/core/net/src/main/java/org/onosproject/net/intent/impl/CompletedIntentUpdate.java
+++ b/core/net/src/main/java/org/onosproject/net/intent/impl/CompletedIntentUpdate.java
@@ -21,6 +21,7 @@
 
 import java.util.Collections;
 import java.util.List;
+import java.util.Optional;
 
 /**
  * Represents a completed phase of processing an intent.
@@ -63,4 +64,9 @@
     default List<Intent> allInstallables() {
         return Collections.emptyList();
     }
+
+    @Override
+    default Optional<IntentUpdate> execute() {
+        return Optional.empty();
+    }
 }
diff --git a/core/net/src/main/java/org/onosproject/net/intent/impl/IntentUpdate.java b/core/net/src/main/java/org/onosproject/net/intent/impl/IntentUpdate.java
index 155c0fe..127c4c8 100644
--- a/core/net/src/main/java/org/onosproject/net/intent/impl/IntentUpdate.java
+++ b/core/net/src/main/java/org/onosproject/net/intent/impl/IntentUpdate.java
@@ -30,9 +30,7 @@
      *
      * @return next update
      */
-    default Optional<IntentUpdate> execute() {
-        return Optional.empty();
-    }
+    Optional<IntentUpdate> execute();
 
     /**
      * Write data to the specified BatchWrite before execution() is called.