diff --git a/etg/intl.py b/etg/intl.py
index 7ac52f9f..40b6b75e 100644
--- a/etg/intl.py
+++ b/etg/intl.py
@@ -50,6 +50,7 @@ def run():
 
     module.addItem(etgtools.WigCode("""\
         char* wxSetlocale(int category, const char *locale);
+        char* wxSetlocale(int category, const wxString& locale);
         """))