diff --git a/lsteamclient/gen_wrapper.py b/lsteamclient/gen_wrapper.py
index fb3948a0..b4bf22fb 100755
--- a/lsteamclient/gen_wrapper.py
+++ b/lsteamclient/gen_wrapper.py
@@ -607,6 +607,7 @@ class Struct:
             out(u'#if defined(__cplusplus) && (defined(__x86_64__) || defined(__aarch64__))\n')
             out(f'    {prefix}{version}() = default;\n')
             out(f'    {prefix}{version}( w32_{version} const& );\n')
+            out(f'    {prefix}{version}( w64_{version} const& );\n')
             out(f'    ~{prefix}{version}();\n')
             out(u'#endif /* __cplusplus */\n')
 
diff --git a/lsteamclient/steamclient_structs_generated.h b/lsteamclient/steamclient_structs_generated.h
index 7cecd87b..6b20d4e4 100644
--- a/lsteamclient/steamclient_structs_generated.h
+++ b/lsteamclient/steamclient_structs_generated.h
@@ -11007,6 +11007,7 @@ struct w64_SteamParamStringArray_t
 #if defined(__cplusplus) && (defined(__x86_64__) || defined(__aarch64__))
     w64_SteamParamStringArray_t() = default;
     w64_SteamParamStringArray_t( w32_SteamParamStringArray_t const& );
+    w64_SteamParamStringArray_t( w64_SteamParamStringArray_t const& );
     ~w64_SteamParamStringArray_t();
 #endif /* __cplusplus */
 };
diff --git a/lsteamclient/unixlib.cpp b/lsteamclient/unixlib.cpp
index 40f4a9a7..90309cf9 100644
--- a/lsteamclient/unixlib.cpp
+++ b/lsteamclient/unixlib.cpp
@@ -1545,6 +1545,13 @@ w64_SteamParamStringArray_t::w64_SteamParamStringArray_t( w32_SteamParamStringAr
     while (count--) m_ppStrings[count] = w32.m_ppStrings[count];
 }
 
+w64_SteamParamStringArray_t::w64_SteamParamStringArray_t( w64_SteamParamStringArray_t const& w64 )
+    : m_nNumStrings(w64.m_nNumStrings)
+{
+    m_ppStrings = new const char *[m_nNumStrings];
+    memcpy( m_ppStrings, w64.m_ppStrings, sizeof(*m_ppStrings) * m_nNumStrings );
+}
+
 w64_SteamParamStringArray_t::~w64_SteamParamStringArray_t()
 {
     delete[] m_ppStrings;