diff --git a/SWIG/Lib/common.swg b/SWIG/Lib/common.swg
index cc72b4fc6..15f249290 100644
--- a/SWIG/Lib/common.swg
+++ b/SWIG/Lib/common.swg
@@ -46,6 +46,7 @@ extern "C" {
 typedef struct _swig_type_info {
   char  *name;                 
   void *(*converter)(void *);
+  char  *str;
   struct _swig_type_info  *next;
   struct _swig_type_info  *prev;
 } _swig_type_info;