1 files changed, 3 insertions, 1 deletions
diff --git a/container-core/src/main/java/com/yahoo/container/handler/VipStatus.java b/container-core/src/main/java/com/yahoo/container/handler/VipStatus.java
index 6f827041ffb..b9ef1627ce7 100644
--- a/container-core/src/main/java/com/yahoo/container/handler/VipStatus.java
+++ b/container-core/src/main/java/com/yahoo/container/handler/VipStatus.java
@@ -117,7 +117,9 @@ public class VipStatus {
 
     /** Returns whether this container should receive traffic at this time */
     public boolean isInRotation() {
-        return currentlyInRotation;
+        synchronized (mutex) {
+            return currentlyInRotation;
+        }
     }
 
 }