diff --git a/core/common/src/main/java/alluxio/conf/PropertyKey.java b/core/common/src/main/java/alluxio/conf/PropertyKey.java
index d17f99b3d032..55b31590e97a 100755
--- a/core/common/src/main/java/alluxio/conf/PropertyKey.java
+++ b/core/common/src/main/java/alluxio/conf/PropertyKey.java
@@ -3931,7 +3931,7 @@ public String toString() {
   public static final PropertyKey USER_BLOCK_SIZE_OVERRIDE_UFS_ENABLED =
       new Builder(Name.USER_BLOCK_SIZE_ENABLED)
           .setDefaultValue(false)
-          .setDescription("Use Default block size for Alluxio files.")
+          .setDescription("When reading a file from UFS, whether Alluxio should ignore the UFS block size and rely on the Alluxio configuration.")
           .setConsistencyCheckLevel(ConsistencyCheckLevel.WARN)
           .setScope(Scope.ALL)
           .build();