diff --git a/core/api/src/main/java/org/onosproject/mastership/MastershipStore.java b/core/api/src/main/java/org/onosproject/mastership/MastershipStore.java
index 6b64705..81c2d8b 100644
--- a/core/api/src/main/java/org/onosproject/mastership/MastershipStore.java
+++ b/core/api/src/main/java/org/onosproject/mastership/MastershipStore.java
@@ -38,7 +38,7 @@
      * @param deviceId device identifier
      * @return established or newly negotiated mastership role
      */
-    MastershipRole requestRole(DeviceId deviceId);
+    CompletableFuture<MastershipRole> requestRole(DeviceId deviceId);
 
     /**
      * Returns the role of a device for a specific controller instance.