diff --git a/systemd/frequency.service b/systemd/frequency.service
index 00624d13..03ecb550 100644
--- a/systemd/frequency.service
+++ b/systemd/frequency.service
@@ -3,7 +3,7 @@ Description=frequency
 
 [Service]
 TimeoutStopSec=5
-ExecStart=/home/pi/CubeSatSim/frequency.sh
+ExecStart=python3 -u /home/pi/CubeSatSim/frequency.py
 WorkingDirectory=/home/pi/CubeSatSim
 StandardOutput=inherit
 StandardError=inherit