diff --git a/install.sh b/install.sh
index 063bfaa..9cac41a 100644
--- a/install.sh
+++ b/install.sh
@@ -4,7 +4,7 @@ echo "Copying Systemd units to system directory..."
 sudo cp systemd-templates/dns-update.service /etc/systemd/system/
 sudo cp systemd-templates/dns-update.timer /etc/systemd/system/
 sudo sed -i -e "s/PH_USER/$(whoami)/g" /etc/systemd/system/dns-update.service
-sudo sed -i -e "s/PH_DIRECTORY/$(pwd)/g" /etc/systemd/system/dns-update.service
+sudo sed -i -e "s:PH_DIRECTORY:$(pwd):g" /etc/systemd/system/dns-update.service
 
 echo "Reloading Systemd..."
 sudo systemctl daemon-reload