diff --git a/hazelcast/src/main/java/com/hazelcast/cache/impl/CacheService.java b/hazelcast/src/main/java/com/hazelcast/cache/impl/CacheService.java
index <HASH>..<HASH> 100644
--- a/hazelcast/src/main/java/com/hazelcast/cache/impl/CacheService.java
+++ b/hazelcast/src/main/java/com/hazelcast/cache/impl/CacheService.java
@@ -153,7 +153,7 @@ public class CacheService extends AbstractCacheService {
     @Override
     public void sendInvalidationEvent(String name, Data key, String sourceUuid) {
         if (key == null) {
-            sendSingleInvalidationEvent(name, key, sourceUuid);
+            sendSingleInvalidationEvent(name, null, sourceUuid);
         } else {
             if (invalidationMessageBatchEnabled) {
                 sendBatchInvalidationEvent(name, key, sourceUuid);
Findbugs fix for "Load of known null value in com.hazelcast.cache.impl.CacheService.sendInvalidationEvent(...)"