diff --git a/Mainnet/docker-compose.yml b/Mainnet/docker-compose.yml
index 18591d7..b6d0bce 100644
--- a/Mainnet/docker-compose.yml
+++ b/Mainnet/docker-compose.yml
@@ -98,7 +98,7 @@ services:
     container_name: btcpayserver_regtest_bitcoind
     image: nicolasdorier/docker-bitcoin:0.15.0.1
     environment:
-      - BITCOIN_EXTRA_ARGS: |
+      BITCOIN_EXTRA_ARGS: |
         rpcport=43782
         regtest=1
         port=39388