diff --git a/groundstation/auto-tune.py b/groundstation/auto-tune.py
index 90a1b14e..2f071ea1 100644
--- a/groundstation/auto-tune.py
+++ b/groundstation/auto-tune.py
@@ -1,6 +1,7 @@
 from rtlsdr import RtlSdr
 import numpy as np
 import matplotlib.pyplot as plt
+import sys
 
 if __name__ == "__main__":
 	graph = 'n'