diff --git a/main.c b/main.c
index 36e73d56..8e528374 100644
--- a/main.c
+++ b/main.c
@@ -21,7 +21,6 @@
  
 
 #include "main.h"
-void read_adc_process(int sig_num);
 
 //#define HAB  // uncomment to change APRS icon from Satellite to Balloon and only BAT telemetry