diff --git a/wxPython/src/_combobox.i b/wxPython/src/_combobox.i
index d593ea6f12..bfd6f5088c 100644
--- a/wxPython/src/_combobox.i
+++ b/wxPython/src/_combobox.i
@@ -81,7 +81,7 @@ public:
                    long style = 0,
                    const wxValidator& validator = wxDefaultValidator,
                    const wxString& name = wxPyComboBoxNameStr),
-        "__init__(Window parent, int id, String value=EmptyString,
+        "__init__(Window parent, int id=-1, String value=EmptyString,
     Point pos=DefaultPosition, Size size=DefaultSize,
     List choices=EmptyList, long style=0, Validator validator=DefaultValidator,
     String name=ComboBoxNameStr) -> ComboBox",
@@ -102,7 +102,7 @@ public:
                      long style = 0,
                      const wxValidator& validator = wxDefaultValidator,
                      const wxString& name = wxPyChoiceNameStr),
-        "Create(Window parent, int id, String value=EmptyString,
+        "Create(Window parent, int id=-1, String value=EmptyString,
     Point pos=DefaultPosition, Size size=DefaultSize,
     List choices=EmptyList, long style=0, Validator validator=DefaultValidator,
     String name=ChoiceNameStr) -> bool",