diff --git a/91_install_cli.sh b/91_install_cli.sh
index 4eef263..7f1ad20 100755
--- a/91_install_cli.sh
+++ b/91_install_cli.sh
@@ -4,13 +4,13 @@
 
 # git update-git-for-windows
 
-# if type -p arduino-cli >/dev/null; then
-#   echo "arduino-cli is installed."
-#   sleep 1
-# else 
+if type -p arduino-cli >/dev/null; then
+  echo "arduino-cli is installed."
+  sleep 1
+else 
 # install (or upgrade) arduino-cli 
   curl -fsSL https://raw.githubusercontent.com/arduino/arduino-cli/master/install.sh | sh
-# fi
+fi
 
 arduino-cli update
 arduino-cli upgrade