diff --git a/sw/airborne/gps.h b/sw/airborne/gps.h
index 466a4afbb4..6103d546bc 100644
--- a/sw/airborne/gps.h
+++ b/sw/airborne/gps.h
@@ -38,8 +38,6 @@
 #include "gps_ubx.h"
 #elif defined USE_GPS_XSENS
 #include "gps_xsens.h"
-#define GPS_NB_CHANNELS 16
-#define GpsFixValid() (gps_mode == 3)
 #elif defined SITL
 #define GPS_NB_CHANNELS 16
 #define GpsFixValid() (gps_mode == 3)
diff --git a/sw/airborne/gps_xsens.h b/sw/airborne/gps_xsens.h
index da6c06f9d1..a6361296fb 100644
--- a/sw/airborne/gps_xsens.h
+++ b/sw/airborne/gps_xsens.h
@@ -22,8 +22,8 @@
  *
  */
 
-/** \file gps_ubx.h
- * \brief UBX protocol specific code
+/** \file gps_xsens.h
+ * \brief XSens GPS
  *
 */
 
@@ -33,6 +33,8 @@
 
 extern uint16_t gps_reset;
 
+#define GPS_NB_CHANNELS 16
+
 #define GpsFixValid() (gps_mode == 3)
 
 #define gps_xsens_Reset(_val) { \