diff --git a/src/freedombone-app-vpn b/src/freedombone-app-vpn
index 5ea00501..86e6da67 100755
--- a/src/freedombone-app-vpn
+++ b/src/freedombone-app-vpn
@@ -561,7 +561,7 @@ function install_stunnel {
 function vpn_generate_keys {
     # generate host keys
     if [ ! -f /etc/openvpn/dh2048.pem ]; then
-        openssl dhparam -out /etc/openvpn/dh2048.pem 2048
+        ${PROJECT_NAME}-dhparam -o /etc/openvpn/dh2048.pem
     fi
     if [ ! -f /etc/openvpn/dh2048.pem ]; then
         echo $'vpn dhparams were not generated'