diff --git a/cubesatsim/cubesatsim.h b/cubesatsim/cubesatsim.h
index 9886217e..83219aca 100644
--- a/cubesatsim/cubesatsim.h
+++ b/cubesatsim/cubesatsim.h
@@ -326,6 +326,7 @@ long micro_timer;
 int ready = FALSE;
 bool cw_stop = false;
 int payload_command = false;
+bool debug_mode = false;
 
 #define PRESSED 0
 #define HELD 0