diff --git a/contrib/include/wx/xrc/xmlres.h b/contrib/include/wx/xrc/xmlres.h
index d0d6a831cd..07cfd4ebbf 100644
--- a/contrib/include/wx/xrc/xmlres.h
+++ b/contrib/include/wx/xrc/xmlres.h
@@ -58,7 +58,7 @@ class wxXmlResourceModule;
 #define WX_XMLRES_CURRENT_VERSION_MINOR            3
 #define WX_XMLRES_CURRENT_VERSION_RELEASE          0
 #define WX_XMLRES_CURRENT_VERSION_REVISION         1
-#define WX_XMLRES_CURRENT_VERSION_STRING    "2.3.0.1"
+#define WX_XMLRES_CURRENT_VERSION_STRING       _T("2.3.0.1")
 
 #define WX_XMLRES_CURRENT_VERSION \
                 (WX_XMLRES_CURRENT_VERSION_MAJOR * 256*256*256 + \
diff --git a/include/wx/xrc/xmlres.h b/include/wx/xrc/xmlres.h
index d0d6a831cd..07cfd4ebbf 100644
--- a/include/wx/xrc/xmlres.h
+++ b/include/wx/xrc/xmlres.h
@@ -58,7 +58,7 @@ class wxXmlResourceModule;
 #define WX_XMLRES_CURRENT_VERSION_MINOR            3
 #define WX_XMLRES_CURRENT_VERSION_RELEASE          0
 #define WX_XMLRES_CURRENT_VERSION_REVISION         1
-#define WX_XMLRES_CURRENT_VERSION_STRING    "2.3.0.1"
+#define WX_XMLRES_CURRENT_VERSION_STRING       _T("2.3.0.1")
 
 #define WX_XMLRES_CURRENT_VERSION \
                 (WX_XMLRES_CURRENT_VERSION_MAJOR * 256*256*256 + \