diff --git a/install.py b/install.py
index 2a27f64..72cb669 100755
--- a/install.py
+++ b/install.py
@@ -31,7 +31,6 @@ def exit():
 try:
     import serial
 except ImportError:
-version=1
     if 'yes'.startswith(input('install pyserial? [y]')):
         os.system('sudo apt update')
         os.system('sudo apt install python3-pip')