diff --git a/include/nostd/string_view.h b/include/nostd/string_view.h
index 0f42116..05af971 100644
--- a/include/nostd/string_view.h
+++ b/include/nostd/string_view.h
@@ -132,6 +132,16 @@ class LIBATFRAME_UTILS_API_HEAD_ONLY basic_string_view {
   //   constexpr basic_string_view(const basic_string_view&) noexcept = default;
   //   basic_string_view& operator=(const basic_string_view&) noexcept = default;
 
+  constexpr basic_string_view(const basic_string_view&) noexcept = default;
+  constexpr basic_string_view& operator=(const basic_string_view&) noexcept = default;
+
+  constexpr basic_string_view& operator=(nostd::nonnull<const_pointer> str) noexcept {
+    basic_string_view{str}.swap(*this);
+    return *this;
+  }
+
+  constexpr basic_string_view& operator=(std::nullptr_t) noexcept = delete;
+
   template <class Allocator>
   constexpr basic_string_view& operator=(::std::basic_string<CharT, Traits, Allocator>&& str) noexcept {
     basic_string_view(str.data(), str.size()).swap(*this);