diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPServiceActor.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPServiceActor.java
index a391b8b8fb64d..45eeac85d6b36 100755
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPServiceActor.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPServiceActor.java
@@ -258,7 +258,7 @@ NamespaceInfo retrieveNamespaceInfo() throws IOException {
     while (shouldRun()) {
       try {
         nsInfo = bpNamenode.versionRequest();
-        LOG.debug(this + " received versionRequest response: " + nsInfo);
+        LOG.debug("{} received versionRequest response: {}", this, nsInfo);
         break;
       } catch(SocketTimeoutException e) {  // namenode is busy
         LOG.warn("Problem connecting to server: " + nnAddr);