diff --git a/include/hpcombi/perm16.hpp b/include/hpcombi/perm16.hpp
index 5b74b239..d8fc99e4 100644
--- a/include/hpcombi/perm16.hpp
+++ b/include/hpcombi/perm16.hpp
@@ -47,19 +47,13 @@ struct alignas(16) PTransf16 : public Vect16 {
     using array = typename decltype(Epu8)::array;
 
     PTransf16() = default;
-    constexpr PTransf16(const PTransf16 &v) = default;
+
     constexpr PTransf16(const vect v) : Vect16(v) {}
     constexpr PTransf16(const epu8 x) : Vect16(x) {}
     PTransf16(std::vector<uint8_t> dom, std::vector<uint8_t> rng,
               size_t = 0 /* unused */);
     PTransf16(std::initializer_list<uint8_t> il);
 
-    PTransf16 &operator=(const PTransf16 &) = default;
-    PTransf16 &operator=(const epu8 &vv) {
-        v = vv;
-        return *this;
-    }
-
     //! Return whether \c *this is a well constructed object
     bool validate(size_t k = 16) const {
         return HPCombi::is_partial_transformation(v, k);
diff --git a/include/hpcombi/vect16.hpp b/include/hpcombi/vect16.hpp
index 49c3e760..5ea4702d 100644
--- a/include/hpcombi/vect16.hpp
+++ b/include/hpcombi/vect16.hpp
@@ -33,19 +33,11 @@ struct alignas(16) Vect16 {
     epu8 v;
 
     Vect16() = default;
-    constexpr Vect16(const Vect16 &v) = default;
-
     constexpr Vect16(epu8 x) : v(x) {}
     Vect16(std::initializer_list<uint8_t> il, uint8_t def = 0)
         : v(Epu8(il, def)) {}
     constexpr operator epu8() const { return v; }
 
-    Vect16 &operator=(const Vect16 &) = default;
-    Vect16 &operator=(const epu8 &vv) {
-        v = vv;
-        return *this;
-    }
-
     array &as_array() { return HPCombi::as_array(v); }
     const array &as_array() const { return HPCombi::as_array(v); }
 
diff --git a/include/hpcombi/vect_generic.hpp b/include/hpcombi/vect_generic.hpp
index 5e1e1558..2ba82a75 100644
--- a/include/hpcombi/vect_generic.hpp
+++ b/include/hpcombi/vect_generic.hpp
@@ -47,21 +47,14 @@ template <size_t Size, typename Expo = uint8_t> struct VectGeneric {
     array v;
 
     VectGeneric() = default;
-    constexpr VectGeneric(const VectGeneric &v) = default;
 
-    VectGeneric(const std::array<Expo, Size> &_v) : v(_v) {}  // NOLINT
+    VectGeneric(const array &_v) : v(_v) {}  // NOLINT
     VectGeneric(std::initializer_list<Expo> il, Expo def = 0) {
         HPCOMBI_ASSERT(il.size() <= Size);
         std::copy(il.begin(), il.end(), v.begin());
         std::fill(v.begin() + il.size(), v.end(), def);
     }
 
-    VectGeneric &operator=(const VectGeneric &) = default;
-    VectGeneric &operator=(const array &vv) {
-        v = vv;
-        return *this;
-    }
-
     Expo operator[](uint64_t i) const { return v[i]; }
     Expo &operator[](uint64_t i) { return v[i]; }