diff --git a/cubesatsim/cubesatsim.h b/cubesatsim/cubesatsim.h
index eeee46e5..35dd8ff3 100644
--- a/cubesatsim/cubesatsim.h
+++ b/cubesatsim/cubesatsim.h
@@ -102,6 +102,7 @@ void configure_radio();
 void send_packet();
 void read_ina219();
 void read_sensors();
+void get_tlm_ao7();
 
 extern int Encode_8b10b[][256];