diff --git a/src/common/datetime.cpp b/src/common/datetime.cpp
index 7e0815799c..45e40a6624 100644
--- a/src/common/datetime.cpp
+++ b/src/common/datetime.cpp
@@ -94,7 +94,7 @@ template<> void wxStringWriteValue(wxString &s , const wxDateTime &data )
     s = data.Format(wxT("%Y-%m-%d %H:%M:%S")) ;
 }
 
-WX_CUSTOM_TYPE_INFO(wxDateTime)
+WX_CUSTOM_TYPE_INFO(wxDateTime, wxToStringConverter<wxDateTime> , wxFromStringConverter<wxDateTime>)
 
 #endif
 
diff --git a/src/common/gdicmn.cpp b/src/common/gdicmn.cpp
index 78493ef396..2df1e3980b 100644
--- a/src/common/gdicmn.cpp
+++ b/src/common/gdicmn.cpp
@@ -89,7 +89,7 @@ template<> void wxStringWriteValue(wxString & , wxPoint* const & )
     assert(0) ;
 }
 
-WX_CUSTOM_TYPE_INFO(wxPoint)
+WX_CUSTOM_TYPE_INFO(wxPoint, wxToStringConverter<wxPoint> , wxFromStringConverter<wxPoint>)
 
 template<> void wxStringReadValue(const wxString &s , wxSize &data )
 {
@@ -111,7 +111,7 @@ template<> void wxStringWriteValue(wxString & , wxSize * const & )
     assert(0) ;
 }
 
-WX_CUSTOM_TYPE_INFO(wxSize)
+WX_CUSTOM_TYPE_INFO(wxSize, wxToStringConverter<wxSize> , wxFromStringConverter<wxSize>)
 
 #endif