diff --git a/cubesatsim/cubesatsim.h b/cubesatsim/cubesatsim.h
index fcd537df..eeee46e5 100644
--- a/cubesatsim/cubesatsim.h
+++ b/cubesatsim/cubesatsim.h
@@ -27,7 +27,7 @@
 #define TXC_PIN 11 // Transceiver Board is present
 #define SWTX_PIN 14 // SR_FRS_05W Transmit Pico software serial port 
 #define SQUELCH 15 // SR_FRS_05W Squelch out
-#define MAIN_INA219  // Power the INA219s on the Main board
+#define MAIN_INA219 16 // Power the INA219s on the Main board
 #define PTT_PIN 17 // SR_FRS_05W PTT Push to Talk - transmit
 #define STEM_LED1 18 // STEM board LED1 Green
 #define STEM_LED2 19 // STEM board LED2 Blue