diff --git a/cubesatsim/cubesatsim.h b/cubesatsim/cubesatsim.h
index e5b1ae9d..354e2bce 100644
--- a/cubesatsim/cubesatsim.h
+++ b/cubesatsim/cubesatsim.h
@@ -29,7 +29,7 @@
 #define SQUELCH 15 // SR_FRS_05W Squelch out
 #define PTT_PIN 17 // SR_FRS_05W PTT Push to Talk - transmit
 #define STEM_LED1 18 // STEM board LED1 Green
-#define STEM_LED1 19 // STEM board LED2 Blue
+#define STEM_LED2 19 // STEM board LED2 Blue
 #define MAIN_LED1 20 // Main board LED1 
 #define MAIN_LED2 21 // Main board LED1 
 #define PD_PIN 22 // SR_FRS_05W PD pin - enable