diff --git a/hadoop-hdfs-project/hadoop-hdfs-nnproxy/src/main/java/org/apache/hadoop/hdfs/nnproxy/server/mount/MountsManager.java b/hadoop-hdfs-project/hadoop-hdfs-nnproxy/src/main/java/org/apache/hadoop/hdfs/nnproxy/server/mount/MountsManager.java
index 022fb138e87..783ab56a0f8 100755
--- a/hadoop-hdfs-project/hadoop-hdfs-nnproxy/src/main/java/org/apache/hadoop/hdfs/nnproxy/server/mount/MountsManager.java
+++ b/hadoop-hdfs-project/hadoop-hdfs-nnproxy/src/main/java/org/apache/hadoop/hdfs/nnproxy/server/mount/MountsManager.java
@@ -124,9 +124,9 @@ public String resolve(String path) {
   public String resolveForBench(String path) {
     String parent = "";
     if (path.charAt(49) == '/')
-      parent = s.substring(0, 49);
+      parent = path.substring(0, 49);
     else
-      parent = s.substring(0, 50);
+      parent = path.substring(0, 50);
     return this.lookupMap.get(parent).get(0).fsUri;
   }