diff --git a/hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/server/SCMBlockProtocolServer.java b/hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/server/SCMBlockProtocolServer.java
index 99f873f5c60a..66fe4cbf3cfd 100644
--- a/hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/server/SCMBlockProtocolServer.java
+++ b/hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/server/SCMBlockProtocolServer.java
@@ -174,6 +174,7 @@ public List<AllocatedBlock> allocateBlock(long size, int num,
       String owner, ExcludeList excludeList) throws IOException {
     Map<String, String> auditMap = Maps.newHashMap();
     auditMap.put("size", String.valueOf(size));
+    auditMap.put("num", String.valueOf(num));
     auditMap.put("type", type.name());
     auditMap.put("factor", factor.name());
     auditMap.put("owner", owner);