diff --git a/packages/contracts-bedrock/scripts/getting-started/config.sh b/packages/contracts-bedrock/scripts/getting-started/config.sh
index 7a21036f44f0..714743e51f08 100755
--- a/packages/contracts-bedrock/scripts/getting-started/config.sh
+++ b/packages/contracts-bedrock/scripts/getting-started/config.sh
@@ -142,7 +142,7 @@ cat << EOL >> tmp_config.json
   "faultGameWithdrawalDelay": 600,
 
   "preimageOracleMinProposalSize": 1800000,
-  "preimageOracleChallengePeriod": 300
+  "preimageOracleChallengePeriod": 300,
 
   "babylonFinalityGadgetRpc": "$BBN_FINALITY_GADGET_RPC"
 }