diff --git a/SWIG/Lib/java/std_wstring.i b/SWIG/Lib/java/std_wstring.i
index f757ff307..fc72ffc1d 100644
--- a/SWIG/Lib/java/std_wstring.i
+++ b/SWIG/Lib/java/std_wstring.i
@@ -12,6 +12,8 @@
 
 namespace std {
 
+%naturalvar wstring;
+
 class wstring;
 
 // wstring
diff --git a/SWIG/Lib/ocaml/std_string.i b/SWIG/Lib/ocaml/std_string.i
index c43664aa3..e8abd81c2 100644
--- a/SWIG/Lib/ocaml/std_string.i
+++ b/SWIG/Lib/ocaml/std_string.i
@@ -25,6 +25,7 @@
 %include <std_vector.i>
 
 %naturalvar std::string;
+%naturalvar std::wstring;
 
 namespace std {
     template <class charT> class basic_string {