diff --git a/sw/airborne/math/pprz_algebra_int.h b/sw/airborne/math/pprz_algebra_int.h
index 11deef7a16..2d28e3467c 100644
--- a/sw/airborne/math/pprz_algebra_int.h
+++ b/sw/airborne/math/pprz_algebra_int.h
@@ -123,12 +123,18 @@ struct Int32Mat33 {
 };
 
 /* Rotational speed                              */
-struct Int32Rates {
+struct Int16Rates {
   int32_t p;
   int32_t q;
   int32_t r;
 };
 
+/* Rotational speed                              */
+struct Int32Rates {
+  int32_t p;
+  int32_t q;
+  int32_t r;
+};
 
 struct Int64Vect2 {
   int64_t x;