diff --git a/installer.sh b/installer.sh
index 5ece243..9a85155 100644
--- a/installer.sh
+++ b/installer.sh
@@ -4,8 +4,8 @@ systemctl status ModemManager | grep 'active (running)' > /dev/null 2>&1
 
 if [ $? != 0 ]
 then
-        systemctl disable ModemManager > /dev/null
-        systemctl stop ModemManager > /dev/null
+        sudo systemctl disable ModemManager > /dev/null
+        sudo systemctl stop ModemManager > /dev/null
 fi
 
 set -e