diff --git a/include/wx/propgrid/props.h b/include/wx/propgrid/props.h
index 3a4c3f513e..91e6e064ab 100644
--- a/include/wx/propgrid/props.h
+++ b/include/wx/propgrid/props.h
@@ -215,14 +215,6 @@ private:
                               wxPGValidationInfo* pValidationInfo,
                               int mode =
                                 wxPG_PROPERTY_VALIDATION_ERROR_MESSAGE );
-
-#if defined(wxLongLong_t)
-    static bool DoValidation( const wxNumericProperty* property,
-                              wxLongLong_t& value,
-                              wxPGValidationInfo* pValidationInfo,
-                              int mode =
-                                wxPG_PROPERTY_VALIDATION_ERROR_MESSAGE );
-#endif // wxLongLong_t
 #endif // wxUSE_LONGLONG
     static bool DoValidation(const wxNumericProperty* property,
                              long& value,
@@ -274,12 +266,6 @@ private:
                              wxULongLong& value,
                              wxPGValidationInfo* pValidationInfo,
                              int mode =wxPG_PROPERTY_VALIDATION_ERROR_MESSAGE);
-#if defined(wxULongLong_t)
-    static bool DoValidation(const wxNumericProperty* property,
-                             wxULongLong_t& value,
-                             wxPGValidationInfo* pValidationInfo,
-                             int mode =wxPG_PROPERTY_VALIDATION_ERROR_MESSAGE);
-#endif // wxULongLong_t
 #endif // wxUSE_LONGLONG
     static bool DoValidation(const wxNumericProperty* property,
                              long& value,
diff --git a/src/propgrid/props.cpp b/src/propgrid/props.cpp
index 07a69b842c..ebe93c82c8 100644
--- a/src/propgrid/props.cpp
+++ b/src/propgrid/props.cpp
@@ -470,17 +470,6 @@ bool wxIntProperty::DoValidation( const wxNumericProperty* property,
                                            pValidationInfo,
                                            mode, wxLongLong(wxPG_LLONG_MIN), wxLongLong(wxPG_LLONG_MAX));
 }
-
-#if defined(wxLongLong_t)
-bool wxIntProperty::DoValidation( const wxNumericProperty* property,
-                                  wxLongLong_t& value,
-                                  wxPGValidationInfo* pValidationInfo,
-                                  int mode )
-{
-    return property->DoNumericValidation<wxLongLong_t>(value, pValidationInfo,
-                                             mode, wxPG_LLONG_MIN, wxPG_LLONG_MAX);
-}
-#endif // wxLongLong_t
 #endif // wxUSE_LONGLONG
 
 bool wxIntProperty::DoValidation(const wxNumericProperty* property,
@@ -743,17 +732,6 @@ bool wxUIntProperty::DoValidation(const wxNumericProperty* property,
     return property->DoNumericValidation<wxULongLong>(value, pValidationInfo,
                                             mode, wxULongLong(0), wxULongLong(wxPG_ULLONG_MAX));
 }
-
-#if defined(wxULongLong_t)
-bool wxUIntProperty::DoValidation(const wxNumericProperty* property,
-                                  wxULongLong_t& value,
-                                  wxPGValidationInfo* pValidationInfo,
-                                  int mode )
-{
-    return property->DoNumericValidation<wxULongLong_t>(value, pValidationInfo,
-                                              mode, 0, wxPG_ULLONG_MAX);
-}
-#endif // wxULongLong_t
 #endif // wxUSE_LONGLONG
 
 bool wxUIntProperty::DoValidation(const wxNumericProperty* property,