diff --git a/install.sh b/install.sh
index 66568a1..66034d1 100644
--- a/install.sh
+++ b/install.sh
@@ -15,7 +15,7 @@ cd /etc/wireguard
 umask 077
 export PRIVKEY=$(wg genkey)
 echo $PRIVKEY | tee privatekey | wg pubkey | tee publickey
-echo $PRIVKEY | tee /etc/wireguard/wg0.conf
+echo $PRIVKEY | tee --append /etc/wireguard/wg0.conf
 
 sysctl -p
 wg-quick up wg0