diff --git a/sw/airborne/subsystems/abi_sender_ids.h b/sw/airborne/subsystems/abi_sender_ids.h
index 8daa312fa2..b5a320c979 100644
--- a/sw/airborne/subsystems/abi_sender_ids.h
+++ b/sw/airborne/subsystems/abi_sender_ids.h
@@ -158,9 +158,9 @@
 #define GPS_SIM_ID 11
 #endif
 
-// #ifndef GPS_MULTI_ID
-// #define GPS_MULTI_ID 12
-// #endif
+#ifndef GPS_MULTI_ID
+#define GPS_MULTI_ID 12
+#endif
  
 /*
  * IDs of IMU sensors (accel, gyro)