diff --git a/core/net/src/main/java/org/onosproject/net/flowobjective/impl/FlowObjectiveManager.java b/core/net/src/main/java/org/onosproject/net/flowobjective/impl/FlowObjectiveManager.java
index 9c0aada..fb12735 100644
--- a/core/net/src/main/java/org/onosproject/net/flowobjective/impl/FlowObjectiveManager.java
+++ b/core/net/src/main/java/org/onosproject/net/flowobjective/impl/FlowObjectiveManager.java
@@ -501,7 +501,7 @@
         List<String> pendingNexts = new ArrayList<>();
         for (Integer nextId : pendingForwards.keySet()) {
             Set<PendingNext> pnext = pendingForwards.get(nextId);
-            StringBuffer pend = new StringBuffer();
+            StringBuilder pend = new StringBuilder();
             pend.append("Next Id: ").append(Integer.toString(nextId))
                 .append(" :: ");
             for (PendingNext pn : pnext) {