diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 4d8f007bb4..aa8a10566f 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2011-10-13  Tom Tromey  <tromey@redhat.com>
+
+	* python/py-type.c (typy_has_key): Make 'field' const.
+
 2011-10-13  Luis Machado  <lgustavo@codesourcery.com>
 
 	* remote.c (remote_save_trace_data): Invert comparison.
diff --git a/gdb/python/py-type.c b/gdb/python/py-type.c
index 44a20386e5..875f7aae9a 100644
--- a/gdb/python/py-type.c
+++ b/gdb/python/py-type.c
@@ -1176,7 +1176,7 @@ static PyObject *
 typy_has_key (PyObject *self, PyObject *args)
 {
   struct type *type = ((type_object *) self)->type;
-  char *field;
+  const char *field;
   int i;
   
   if (!PyArg_ParseTuple (args, "s", &field))