diff --git a/btcpay-setup.sh b/btcpay-setup.sh
index 98095e2..bb2a275 100755
--- a/btcpay-setup.sh
+++ b/btcpay-setup.sh
@@ -119,6 +119,7 @@ if [ ! -z $BTCPAY_DOCKER_COMPOSE ] && [ ! -z $DOWNLOAD_ROOT ] && [ -z $BTCPAYGEN
 fi
 #########################################################
 
+: "${LETSENCRYPT_EMAIL:=me@example.com}"
 : "${BTCPAYGEN_OLD_PREGEN:=false}"
 : "${NBITCOIN_NETWORK:=mainnet}"
 : "${BTCPAYGEN_CRYPTO1:=btc}"