diff --git a/arbitrum-sepolia-fullnode.yml b/arbitrum-sepolia-fullnode.yml
index 6e961b44..63b3563e 100644
--- a/arbitrum-sepolia-fullnode.yml
+++ b/arbitrum-sepolia-fullnode.yml
@@ -16,7 +16,7 @@ services:
       - --persistent.chain=/arbitrum-node/data/
       - --persistent.global-config=/arbitrum-node/
       - --parent-chain.connection.url=${ARBITRUM_SEPOLIA_URL}
-      - --parent-chain.blob-client.beacon-url=${ARBITRUM_SEPOLIA_BAECON_URL}
+      - --parent-chain.blob-client.beacon-url=${ARBITRUM_SEPOLIA_BEACON_URL}
       - --chain.id=421614
       - --http.api=net,web3,eth,debug 
       - --http.corsdomain=*