diff --git a/optimism/scripts/op-node-start.sh b/optimism/scripts/op-node-start.sh
index 10eee15d..791b8821 100755
--- a/optimism/scripts/op-node-start.sh
+++ b/optimism/scripts/op-node-start.sh
@@ -8,7 +8,7 @@ echo $OP_NODE__RPC_TYPE
 exec op-node \
   --l1=$OPTIMISM_L1_URL \
   --l2=http://op-erigon:8551 \
-  --network=mainnet \
+  --network=ethereum \
   --rpc.addr=0.0.0.0 \
   --rpc.port=9545 \
   --l2.jwt-secret=/jwtsecret \