diff --git a/README.md b/README.md
index 363b576..a24e9f8 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,10 @@ go build .
 
 See [./environments/example.toml](./environments/example.toml) for an annotated example config file.
 
+> **Note:** previous versions of this service used different variable names. To update, change the following:
+> * `LVLDB_MODE`, `LVLDB_PATH`, `LVLDB_ANCIENT`, `LVLDB_URL` => `LEVELDB_*`
+> * `LOG_FILE_PATH` => `LOG_FILE`
+
 ### Local Setup
 
 * Create a chain config file `chain.json` according to chain config in genesis json file used by local geth.
diff --git a/startup_script.sh b/startup_script.sh
index 3f5f92e..7b216d1 100755
--- a/startup_script.sh
+++ b/startup_script.sh
@@ -10,8 +10,8 @@ fi
 # Check the database variables are set
 test "$VDB_COMMAND"
 
-# docker must be run in privilaged mode for mounts to work
-echo "Setting up /app/geth-rw overlayed /app/geth-ro"
+# docker must be run in privileged mode for mounts to work
+echo "Setting up /app/geth-rw overlayed onto /app/geth-ro"
 mkdir -p /tmp/overlay
 mount -t tmpfs tmpfs /tmp/overlay
 mkdir -p /tmp/overlay/upper