diff --git a/zabbix_agent.sh b/zabbix_agent.sh
index 94a672a..d0a7719 100644
--- a/zabbix_agent.sh
+++ b/zabbix_agent.sh
@@ -20,7 +20,7 @@ DEBIAN_URL="http://repo.zabbix.com/zabbix/3.4/debian/pool/main/z/zabbix-release/
 wget --output-document=${DIRECTORY}/${FILENAME} $DEBIAN_URL
 
 # install the repo
-dpkg -i ${DIRECTORY}/${FILENAME}
+dpkg --install ${DIRECTORY}/${FILENAME}
 
 ZABBIX_SERVER="gauntzabbix.home.johnhgaunt.com"
 
@@ -28,16 +28,16 @@ ZABBIX_SERVER="gauntzabbix.home.johnhgaunt.com"
 apt update
 
 # install the agent
-apt install -y zabbix-agent
+apt install --assume-yes zabbix-agent
 
 # ask for the hostname
 read -e -p "Enter Hostname: " -i "$(cat /etc/hostname)" hostname
 
-sed -i "s/Hostname=Zabbix\ server/Hostname=${hostname}/" /etc/zabbix/zabbix_agentd.conf
+sed --in-place "s/^Hostname=Zabbix\ server/Hostname=${hostname}/" /etc/zabbix/zabbix_agentd.conf
 
-sed -i "s/Server=127.0.0.1/Server=${ZABBIX_SERVER}/" /etc/zabbix/zabbix_agentd.conf
+sed --in-place "s/^Server=127.0.0.1/Server=${ZABBIX_SERVER}/" /etc/zabbix/zabbix_agentd.conf
 
-sed -i "s/ServerActive=127.0.0.1/ServerActive=${ZABBIX_SERVER}/" /etc/zabbix/zabbix_agentd.conf
+sed --in-place "s/^ServerActive=127.0.0.1/ServerActive=${ZABBIX_SERVER}/" /etc/zabbix/zabbix_agentd.conf
 
 systemctl restart zabbix-agent