diff --git a/doc/blobfs.md b/doc/blobfs.md
index 6449f1354d..221abed4d4 100644
--- a/doc/blobfs.md
+++ b/doc/blobfs.md
@@ -14,21 +14,26 @@ make
 ~~~
 
 Clone the RocksDB repository from the SPDK GitHub fork into a separate directory.
-Make sure you check out the `spdk-v5.6.1` branch.
+Make sure you check out the `spdk-v5.14.3` branch.
 
 ~~~{.sh}
 cd ..
-git clone -b spdk-v5.6.1 https://github.com/spdk/rocksdb.git
+git clone -b spdk-v5.14.3 https://github.com/spdk/rocksdb.git
 ~~~
 
 Build RocksDB.  Only the `db_bench` benchmarking tool is integrated with BlobFS.
-(Note: add `DEBUG_LEVEL=0` for a release build.)
 
 ~~~{.sh}
 cd rocksdb
 make db_bench SPDK_DIR=path/to/spdk
 ~~~
 
+Or you can also add `DEBUG_LEVEL=0` for a release build (need to turn on `USE_RTTI`).
+
+~~~{.sh}
+export USE_RTTI=1 && make db_bench DEBUG_LEVEL=0 SPDK_DIR=path/to/spdk
+~~~
+
 Create an NVMe section in the configuration file using SPDK's `gen_nvme.sh` script.
 
 ~~~{.sh}