diff --git a/manual/repo/docker/md-server.yml b/manual/repo/docker/md-server.yml
index 8bcd5488..f2b04d4f 100644
--- a/manual/repo/docker/md-server.yml
+++ b/manual/repo/docker/md-server.yml
@@ -17,7 +17,7 @@ services:
       - MD_PORT=${MD_PORT:-8084}
       - MD_LOG_LEVEL=${MD_LOG_LEVEL:-info}
       - MD_MAX_CACHE_SIZE=${MD_MAX_CACHE_SIZE:-1GB}
-      - SEAF_SERVER_STORAGE_TYPE=${SEAF_SERVER_STORAGE_TYPE:-disk}
+      - SEAF_SERVER_STORAGE_TYPE=${SEAF_SERVER_STORAGE_TYPE:-}
       - MD_STORAGE_TYPE=${MD_STORAGE_TYPE:-disk}
       - S3_COMMIT_BUCKET=${S3_COMMIT_BUCKET:-}
       - S3_FS_BUCKET=${S3_FS_BUCKET:-}
diff --git a/manual/repo/docker/metadata-server/md-server.yml b/manual/repo/docker/metadata-server/md-server.yml
index 15bdf12b..354bb47f 100644
--- a/manual/repo/docker/metadata-server/md-server.yml
+++ b/manual/repo/docker/metadata-server/md-server.yml
@@ -17,7 +17,7 @@ services:
       - MD_PORT=${MD_PORT:-8084}
       - MD_LOG_LEVEL=${MD_LOG_LEVEL:-info}
       - MD_MAX_CACHE_SIZE=${MD_MAX_CACHE_SIZE:-1GB}
-      - SEAF_SERVER_STORAGE_TYPE=${SEAF_SERVER_STORAGE_TYPE:-disk}
+      - SEAF_SERVER_STORAGE_TYPE=${SEAF_SERVER_STORAGE_TYPE:-}
       - MD_STORAGE_TYPE=${MD_STORAGE_TYPE:-disk}
       - S3_COMMIT_BUCKET=${S3_COMMIT_BUCKET:-}
       - S3_FS_BUCKET=${S3_FS_BUCKET:-}