diff --git a/sw/airborne/math/pprz_geodetic_double.h b/sw/airborne/math/pprz_geodetic_double.h
index bac9541b01..5fc9389216 100644
--- a/sw/airborne/math/pprz_geodetic_double.h
+++ b/sw/airborne/math/pprz_geodetic_double.h
@@ -26,7 +26,7 @@ struct NedCoor_d {
   double z;
 };
 
-/* East North Down local tangeant plane */
+/* East North Up local tangeant plane */
 struct EnuCoor_d {
   double x;
   double y;