diff --git a/libraries/AP_Math/vectorN.h b/libraries/AP_Math/vectorN.h
index 8204390d22..40c32ffd54 100644
--- a/libraries/AP_Math/vectorN.h
+++ b/libraries/AP_Math/vectorN.h
@@ -36,7 +36,9 @@ class VectorN
 public:
     // trivial ctor
     inline VectorN<T,N>() {
-        memset(_v, 0, sizeof(T)*N);
+        for (auto i = 0; i < N; i++) {
+            _v[i] = T{};
+        }
     }
 
     // vector ctor