diff --git a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
index 71e68c272e0..e3d0ca89acd 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
+++ b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
@@ -725,6 +725,8 @@ Release 2.7.0 - UNRELEASED
     using more than 1 DataNode and more than 2 storage locations per DataNode.
     (cnauroth)
 
+    HDFS-7637. Fix the check condition for reserved path. (Yi Liu via jing9)
+
 Release 2.6.1 - UNRELEASED
 
   INCOMPATIBLE CHANGES
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java
index 61ef19fc587..c171448a1b7 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java
@@ -1311,7 +1311,7 @@ public class FSDirectory implements Closeable {
 
   /** Check if a given path is reserved */
   public static boolean isReservedName(String src) {
-    return src.startsWith(DOT_RESERVED_PATH_PREFIX);
+    return src.startsWith(DOT_RESERVED_PATH_PREFIX + Path.SEPARATOR);
   }
 
   static boolean isReservedRawName(String src) {