diff --git a/source/blender/makesrna/intern/rna_actuator.c b/source/blender/makesrna/intern/rna_actuator.c
index 2fa93bcecdd..dc3c597780b 100644
--- a/source/blender/makesrna/intern/rna_actuator.c
+++ b/source/blender/makesrna/intern/rna_actuator.c
@@ -438,6 +438,15 @@ static void rna_Actuator_Armature_update(Main *bmain, Scene *scene, PointerRNA *
 	constraint[0] = 0;
 }
 
+static void rna_Actuator_sound_sound_set(PointerRNA *ptr, PointerRNA value)
+{
+	bActuator *act = (bActuator *)ptr->data;
+	bSoundActuator *sa = (bSoundActuator *) act->data;
+
+	sa->sound = value.data;
+	((ID *)value.data)->us += 1;
+}
+
 /* note: the following set functions exists only to avoid id refcounting */
 static void rna_Actuator_editobject_mesh_set(PointerRNA *ptr, PointerRNA value)
 {
@@ -895,6 +904,7 @@ static void rna_def_sound_actuator(BlenderRNA *brna)
 	RNA_def_property_struct_type(prop, "Sound");
 	RNA_def_property_flag(prop, PROP_EDITABLE);
 	RNA_def_struct_ui_text(srna, "Sound", "Sound file");
+	RNA_def_property_pointer_funcs(prop, NULL, "rna_Actuator_sound_sound_set", NULL, NULL);
 	RNA_def_property_update(prop, NC_LOGIC, NULL);
 
 	prop= RNA_def_property(srna, "mode", PROP_ENUM, PROP_NONE);