Index: src/lib/core/machine.c
===================================================================
--- src/lib/core/machine.c.orig	2015-12-29 23:24:20.000000000 +0200
+++ src/lib/core/machine.c	2017-04-02 18:35:45.045240346 +0200
@@ -2687,7 +2687,7 @@ bt_machine_dbg_print_parts (const BtMach
 
 static xmlNodePtr
 bt_machine_persistence_save (const BtPersistence * const persistence,
-    const xmlNodePtr const parent_node)
+    const xmlNodePtr parent_node)
 {
   const BtMachine *const self = BT_MACHINE (persistence);
   GstObject *machine;
Index: src/lib/core/wave.c
===================================================================
--- src/lib/core/wave.c.orig	2015-08-16 14:21:45.000000000 +0200
+++ src/lib/core/wave.c	2017-04-02 18:42:45.757608888 +0200
@@ -650,7 +650,7 @@ bt_wave_get_level_by_index (const BtWave
 
 static xmlNodePtr
 bt_wave_persistence_save (const BtPersistence * const persistence,
-    const xmlNodePtr const parent_node)
+    const xmlNodePtr parent_node)
 {
   const BtWave *const self = BT_WAVE (persistence);
   xmlNodePtr node = NULL;