diff --git a/include/wx/defs.h b/include/wx/defs.h
index 76161c8ca7..35c46f8e3a 100644
--- a/include/wx/defs.h
+++ b/include/wx/defs.h
@@ -86,11 +86,16 @@
 #endif // __SALFORDC__
 
 // Digital Unix C++ compiler only defines this symbol for .cxx and .hxx files,
-// so definte it ourselves
+// so define it ourselves
 #ifdef __DECCXX
     #define __cplusplus
 #endif // __DECCXX
 
+// Resolves linking problems under HP-UX
+#if defined(__HPUX__) && !defined(__GNUG__)
+    #define va_list __gnuc_va_list
+#endif // HP-UX
+
 //////////////////////////////////////////////////////////////////////////////////
 // Currently Only MS-Windows/NT, XView and Motif are supported
 //