diff --git a/include/instance.hpp b/include/instance.hpp
index fb85a03..214be77 100644
--- a/include/instance.hpp
+++ b/include/instance.hpp
@@ -57,20 +57,14 @@ public:
      *
      *  @since  0.1.0
      */
-    explicit Instance(const string_view hostname,
-                      const string_view access_token)
-        : _hostname{hostname}
-        , _baseuri{"https://" + _hostname}
-        , _access_token{access_token}
-        , _max_chars{0}
-    {}
+    explicit Instance(string_view hostname, string_view access_token);
 
     /*!
      *  @brief  Copy constructor. A new CURLWrapper is constructed.
      *
      *  @since  0.5.2
      */
-    Instance(const Instance &other) = default;
+    Instance(const Instance &other);
 
     //! Move constructor
     Instance(Instance &&other) noexcept = delete;
@@ -143,9 +137,10 @@ public:
      *
      *  @since  0.1.0
      */
-    inline void set_access_token(string access_token)
+    inline void set_access_token(const string_view access_token)
     {
-        _access_token = move(access_token);
+        _access_token = access_token;
+        CURLWrapper::set_access_token(access_token);
     }
 
     /*!
diff --git a/src/instance.cpp b/src/instance.cpp
index fb8db81..5056242 100644
--- a/src/instance.cpp
+++ b/src/instance.cpp
@@ -31,6 +31,29 @@ using std::regex;
 using std::regex_search;
 using std::smatch;
 
+Instance::Instance(const string_view hostname, const string_view access_token)
+    : _hostname{hostname}
+    , _baseuri{"https://" + _hostname}
+    , _max_chars{0}
+{
+    set_access_token(access_token);
+}
+
+Instance::Instance(const Instance &other)
+    : CURLWrapper{other}
+    , _hostname{other._hostname}
+    , _baseuri{other._baseuri}
+    , _access_token{other._access_token}
+    , _max_chars{other._max_chars}
+    , _proxy{other._proxy}
+    , _post_formats{other._post_formats}
+    , _cainfo{other._cainfo}
+    , _useragent{other._useragent}
+{
+    CURLWrapper::setup_connection_properties(_proxy, _access_token,
+                                             _cainfo, _useragent);
+}
+
 uint64_t Instance::get_max_chars() noexcept
 {
     constexpr uint64_t default_max_chars{500};