diff --git a/gdb/python/py-xmethods.c b/gdb/python/py-xmethods.c
index 0062b2d..5ba146f 100644
--- a/gdb/python/py-xmethods.c
+++ b/gdb/python/py-xmethods.c
@@ -106,7 +106,7 @@ invoke_match_method (PyObject *matcher, PyObject *py_obj_type,
 
   cleanups = make_cleanup (null_cleanup, NULL);
 
-  enabled_field = PyObject_GetAttrString (matcher, enabled_field_name);
+  enabled_field = PyObject_GetAttrString (matcher, (char *) enabled_field_name);
   if (enabled_field == NULL)
     {
       do_cleanups (cleanups);
@@ -127,7 +127,7 @@ invoke_match_method (PyObject *matcher, PyObject *py_obj_type,
       Py_RETURN_NONE;
     }
 
-  match_method = PyObject_GetAttrString (matcher, match_method_name);
+  match_method = PyObject_GetAttrString (matcher, (char *) match_method_name);
   if (match_method == NULL)
     {
       do_cleanups (cleanups);
@@ -252,13 +252,13 @@ gdbpy_get_matching_xmethod_workers
 
   /* Gather debug method matchers registered globally.  */
   if (gdb_python_module != NULL
-      && PyObject_HasAttrString (gdb_python_module, matchers_attr_str))
+      && PyObject_HasAttrString (gdb_python_module, (char *) matchers_attr_str))
     {
       PyObject *gdb_matchers;
       PyObject *temp = py_xmethod_matcher_list;
 
       gdb_matchers = PyObject_GetAttrString (gdb_python_module,
-					     matchers_attr_str);
+					     (char *) matchers_attr_str);
       if (gdb_matchers != NULL)
 	{
 	  py_xmethod_matcher_list = PySequence_Concat (temp, gdb_matchers);
@@ -391,8 +391,8 @@ gdbpy_get_xmethod_arg_types (const struct extension_language_defn *extlang,
 
   cleanups = ensure_python_env (get_current_arch (), current_language);
 
-  get_arg_types_method =  PyObject_GetAttrString (py_worker,
-						  get_arg_types_method_name);
+  get_arg_types_method = PyObject_GetAttrString
+    (py_worker, (char *) get_arg_types_method_name);
   if (get_arg_types_method == NULL)
     {
       gdbpy_print_stack ();