diff --git a/main.h b/main.h
index 082f230c..08a9ad5e 100644
--- a/main.h
+++ b/main.h
@@ -202,6 +202,7 @@ char sensor_string[SENSOR_FIELDS][32];
 int test_i2c_bus(int bus);
 
 //const char pythonCmd[] = "python3 -u /home/pi/CubeSatSim/python/voltcurrent.py ";
+const char pythonVenv[] = "source /home/pi/venv/bin/activate";
 const char pythonCmd[] = "/home/pi/venv/bin/python3 -u /home/pi/CubeSatSim/ina219.py ";
 char pythonStr[100], pythonConfigStr[100], busStr[10];
 int map[8] = {0, 1, 2, 3, 4, 5, 6, 7};