diff --git a/README.md b/README.md
index fb81e47..94c1005 100644
--- a/README.md
+++ b/README.md
@@ -40,7 +40,7 @@ It will install WireGuard (kernel module and tools) on the server, configure it,
 To generate more client files, run the following:
 
 ```sh
-./wireguard-install.sh add_client
+./wireguard-install.sh add-client
 ```
 
 Make sure you choose different IPs for you clients.
diff --git a/wireguard-install.sh b/wireguard-install.sh
index 031dc33..c811ce8 100644
--- a/wireguard-install.sh
+++ b/wireguard-install.sh
@@ -79,7 +79,7 @@ if [ "$(systemd-detect-virt)" == "lxc" ]; then
     exit
 fi
 
-if [[ $1 == "add_client" ]];then
+if [[ $1 == "add-client" ]];then
     if [[ -e /etc/wireguard ]]; then
         addClient
         exit 0
@@ -88,7 +88,7 @@ if [[ $1 == "add_client" ]];then
         exit 1
     fi
 elif [[ -e /etc/wireguard ]]; then
-    echo "WireGuard is already installed. Run with 'add_client' to add a client."
+    echo "WireGuard is already installed. Run with 'add-client' to add a client."
     exit 1
 fi