diff --git a/install/adscontrol.sh b/install/adscontrol.sh
index 358a7c5..ae840bd 100644
--- a/install/adscontrol.sh
+++ b/install/adscontrol.sh
@@ -1,11 +1,13 @@
 # Install asdcontrol for controlling brightness on Apple Displays
-git clone https://github.com/nikosdion/asdcontrol.git /tmp/asdcontrol
-cd /tmp/asdcontrol
-make
-sudo make install
-cd -
-rm -rf /tmp/asdcontrol
+if ! command -v asdcontrol &>/dev/null; then
+  git clone https://github.com/nikosdion/asdcontrol.git /tmp/asdcontrol
+  cd /tmp/asdcontrol
+  make
+  sudo make install
+  cd -
+  rm -rf /tmp/asdcontrol
 
-# Setup sudo-less controls
-echo "$USER ALL=(ALL) NOPASSWD: /usr/local/bin/asdcontrol" | sudo tee /etc/sudoers.d/asdcontrol
-sudo chmod 440 /etc/sudoers.d/asdcontrol
+  # Setup sudo-less controls
+  echo "$USER ALL=(ALL) NOPASSWD: /usr/local/bin/asdcontrol" | sudo tee /etc/sudoers.d/asdcontrol
+  sudo chmod 440 /etc/sudoers.d/asdcontrol
+fi