diff --git a/scripts/init-bedrock.sh b/scripts/init-bedrock.sh
index ea99df1..c659149 100755
--- a/scripts/init-bedrock.sh
+++ b/scripts/init-bedrock.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
-set -eou
+set -e
 
 # Import utilities.
 source ./scripts/utils.sh
@@ -26,7 +26,7 @@ echo "Fetching download link..."
 
 if [ "$NODE_TYPE" = "full" ]; then
   # Warning: syncmode=full for syncing full node is deprecated and not recommended to use
-  if [ "${OP_GETH__SYNCMODE+x}" = "full" ]; then
+  if [ "$OP_GETH__SYNCMODE" = "full" ]; then
     if [ "$NETWORK_NAME" = "op-mainnet" ]; then
       BEDROCK_TAR_DOWNLOAD="https://r2-snapshots.fastnode.io/op/$(curl -s https://r2-snapshots.fastnode.io/op/latest-mainnet)"
     elif [ "$NETWORK_NAME" = "op-goerli" ]; then
@@ -45,7 +45,7 @@ elif [ "$NODE_TYPE" = "archive" ]; then
   fi
 fi
 
-if [ -n "${BEDROCK_TAR_DOWNLOAD+x}" ]; then
+if [ -n "$BEDROCK_TAR_DOWNLOAD" ]; then
   if [[ "$BEDROCK_TAR_DOWNLOAD" == *.zst ]]; then
     BEDROCK_TAR_PATH+=".zst"
   elif [[ "$BEDROCK_TAR_DOWNLOAD" == *.lz4 ]]; then
diff --git a/scripts/init-l2geth.sh b/scripts/init-l2geth.sh
index e8c3fbd..697a769 100755
--- a/scripts/init-l2geth.sh
+++ b/scripts/init-l2geth.sh
@@ -1,12 +1,12 @@
 #!/bin/sh
-set -eou
+set -e
 
 if [ "$NETWORK_NAME" != "op-mainnet" ]; then
   echo "Stopping l2geth for a non op-mainnet chain"
   exit
 fi
 
-if [ -n "${OP_GETH__HISTORICAL_RPC+x}" ]; then
+if [ -n "${OP_GETH__HISTORICAL_RPC}" ]; then
   echo "Stopping l2geth for using an external historical RPC"
   exit
 fi
diff --git a/scripts/start-dtl.sh b/scripts/start-dtl.sh
index 5426ba6..bfa810a 100755
--- a/scripts/start-dtl.sh
+++ b/scripts/start-dtl.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
-set -eou
+set -e
 
 # Setting both endpoints doesn't hurt.
 export DATA_TRANSPORT_LAYER__L1_RPC_ENDPOINT=$DATA_TRANSPORT_LAYER__RPC_ENDPOINT
diff --git a/scripts/start-l2geth.sh b/scripts/start-l2geth.sh
index 798b46c..7c4807a 100755
--- a/scripts/start-l2geth.sh
+++ b/scripts/start-l2geth.sh
@@ -1,12 +1,12 @@
 #!/bin/sh
-set -eou
+set -e
 
 if [ "$NETWORK_NAME" != "op-mainnet" ]; then
   echo "Stopping l2geth for a non op-mainnet chain"
   exit
 fi
 
-if [ -n "${OP_GETH__HISTORICAL_RPC+x}" ]; then
+if [ -n "${OP_GETH__HISTORICAL_RPC}" ]; then
   echo "Stopping l2geth for using an external historical RPC"
   exit
 fi
diff --git a/scripts/start-op-geth.sh b/scripts/start-op-geth.sh
index e623e9b..1d07b51 100755
--- a/scripts/start-op-geth.sh
+++ b/scripts/start-op-geth.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
-set -eou
+set -e
 
 # Wait for the Bedrock flag for this network to be set.
 echo "Waiting for Bedrock node to initialize..."
@@ -7,7 +7,7 @@ while [ ! -f /shared/initialized.txt ]; do
   sleep 1
 done
 
-if [ -z "${IS_CUSTOM_CHAIN+x}" ]; then
+if [ -z "${IS_CUSTOM_CHAIN}" ]; then
   if [ "$NETWORK_NAME" == "op-mainnet" ] || [ "$NETWORK_NAME" == "op-goerli" ]; then
     export EXTENDED_ARG="${EXTENDED_ARG:-} --rollup.historicalrpc=${OP_GETH__HISTORICAL_RPC:-http://l2geth:8545} --op-network=$NETWORK_NAME"
   else
@@ -16,7 +16,7 @@ if [ -z "${IS_CUSTOM_CHAIN+x}" ]; then
 fi
 
 # Init genesis if custom chain
-if [ -n "${IS_CUSTOM_CHAIN+x}" ]; then
+if [ -n "${IS_CUSTOM_CHAIN}" ]; then
   geth init --datadir="$BEDROCK_DATADIR" /chainconfig/genesis.json
 fi
 
diff --git a/scripts/start-op-node.sh b/scripts/start-op-node.sh
index fa9b0e5..e17ad29 100755
--- a/scripts/start-op-node.sh
+++ b/scripts/start-op-node.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
-set -eou
+set -e
 
 # Wait for the Bedrock flag for this network to be set.
 echo "Waiting for Bedrock node to initialize..."
@@ -7,7 +7,7 @@ while [ ! -f /shared/initialized.txt ]; do
   sleep 1
 done
 
-if [ -n "${IS_CUSTOM_CHAIN+x}" ]; then
+if [ -n "${IS_CUSTOM_CHAIN}" ]; then
   export EXTENDED_ARG="${EXTENDED_ARG:-} --rollup.config=/chainconfig/rollup.json"
 else
   export EXTENDED_ARG="${EXTENDED_ARG:-} --network=$NETWORK_NAME --rollup.load-protocol-versions=true --rollup.halt=major"