diff --git a/stack-orchestrator/compose/docker-compose-fixturenet-eth.yml b/stack-orchestrator/compose/docker-compose-fixturenet-eth.yml
index 4608a2a..3c75119 100644
--- a/stack-orchestrator/compose/docker-compose-fixturenet-eth.yml
+++ b/stack-orchestrator/compose/docker-compose-fixturenet-eth.yml
@@ -25,6 +25,7 @@ services:
       CERC_RUN_STATEDIFF: ${CERC_RUN_STATEDIFF:-detect}
       CERC_STATEDIFF_DB_NODE_ID: 1
       CERC_SCRIPT_DEBUG: ${CERC_SCRIPT_DEBUG}
+      CERC_ALLOW_UNPROTECTED_TXS: ${CERC_ALLOW_UNPROTECTED_TXS:-false}
     env_file:
       - ../config/fixturenet-eth/fixturenet-eth.env
     image: cerc/fixturenet-eth-geth:local
diff --git a/stack-orchestrator/container-build/cerc-fixturenet-eth-geth/run-el.sh b/stack-orchestrator/container-build/cerc-fixturenet-eth-geth/run-el.sh
index be35c8b..0f29cea 100755
--- a/stack-orchestrator/container-build/cerc-fixturenet-eth-geth/run-el.sh
+++ b/stack-orchestrator/container-build/cerc-fixturenet-eth-geth/run-el.sh
@@ -9,6 +9,7 @@ NETWORK_ID=`cat /opt/testnet/el/el-config.yaml | grep 'chain_id' | awk '{ print
 NETRESTRICT=`ip addr | grep 'inet ' | grep -v '127.0' | head -1 | awk '{print $2}'`
 CERC_ETH_DATADIR="${CERC_ETH_DATADIR:-$HOME/ethdata}"
 CERC_PLUGINS_DIR="${CERC_PLUGINS_DIR:-/usr/local/lib/plugeth}"
+ALLOW_UNPROTECTED_TXS=${CERC_ALLOW_UNPROTECTED_TXS:-false} # Allow for unprotected (non EIP155) txs to be submitted via RPC
 
 cd /opt/testnet/build/el
 python3 -m http.server 9898 &
@@ -54,6 +55,7 @@ else
       --datadir="${CERC_ETH_DATADIR}" \
       --bootnodes="${ENODE}" \
       --allow-insecure-unlock \
+      --rpc.allow-unprotected-txs ${ALLOW_UNPROTECTED_TXS} \
       --http \
       --http.addr="0.0.0.0" \
       --http.vhosts="*" \