diff --git a/samples/widgets/datepick.cpp b/samples/widgets/datepick.cpp
index c0646f0b89..1ce550538b 100644
--- a/samples/widgets/datepick.cpp
+++ b/samples/widgets/datepick.cpp
@@ -186,7 +186,7 @@ void DatePickerWidgetsPage::Reset()
 
     m_datePicker->SetValue(today);
     m_day->SetValue(wxString::Format(wxT("%d"), today.GetDay()));
-    m_month->SetValue(wxString::Format(wxT("%d"), today.GetMonth()));
+    m_month->SetValue(wxString::Format(wxT("%d"), today.GetMonth() + 1));
     m_year->SetValue(wxString::Format(wxT("%d"), today.GetYear()));
 }