diff --git a/geth-poa/entrypoint.sh b/geth-poa/entrypoint.sh
index 2ca0d81a830a..6db65b522212 100644
--- a/geth-poa/entrypoint.sh
+++ b/geth-poa/entrypoint.sh
@@ -1,9 +1,9 @@
 #!/bin/sh
 set -exu
 
-GENESIS_L1_PATH="/genesis.json"
+GENESIS_L1_PATH=${GENESIS_L1_PATH:-/genesis.json}
 VERBOSITY=3
-GETH_DATA_DIR=/data
+GETH_DATA_DIR=${GETH_DATA_DIR:-/data}
 GETH_CHAINDATA_DIR="$GETH_DATA_DIR/geth/chaindata"
 GETH_KEYSTORE_DIR="$GETH_DATA_DIR/keystore"
 CHAIN_ID=$(cat "$GENESIS_L1_PATH" | jq -r .config.chainId)