diff --git a/install.sh b/install.sh
index d42715a..03e95f4 100755
--- a/install.sh
+++ b/install.sh
@@ -9,13 +9,13 @@ if [[ "$EUID" == 0 ]]; then
     echo "Run script as normal user"
 fi
 
-$(SUDO) apt update
-$(SUDO) apt install software-properties-common
-$(SUDO) apt-add-repository --yes --update ppa:ansible/ansible
-$(SUDO) apt install -y git ansible
+"${SUDO}" apt update
+"${SUDO}" apt install software-properties-common
+"${SUDO}" apt-add-repository --yes --update ppa:ansible/ansible
+"${SUDO}" apt install -y git ansible
 
-mkdir -p $(HOME)/src
-cd $(HOME)/src
+mkdir -p "${HOME}/src"
+cd "${HOME}/src"
 git clone "$ANSIBLE_REPO"
 cd ansible-desktop
 ansible-playbook localhost.yml