diff --git a/libisoburn/trunk/xorriso/drive_mgt.c b/libisoburn/trunk/xorriso/drive_mgt.c
index 57f5c6b3..03d484ca 100644
--- a/libisoburn/trunk/xorriso/drive_mgt.c
+++ b/libisoburn/trunk/xorriso/drive_mgt.c
@@ -363,6 +363,8 @@ int Xorriso_aquire_drive(struct XorrisO *xorriso, char *adr, char *show_adr,
  volset= isoburn_get_attached_image(drive);
  if(volset != NULL) {
    ret= iso_image_set_truncate_mode(volset, 1, xorriso->file_name_limit);
+   iso_image_unref(volset);
+   volset= NULL;
    Xorriso_process_msg_queues(xorriso,0);
    if(ret < 0)
      {ret= 0; goto ex;}
@@ -410,6 +412,7 @@ int Xorriso_aquire_drive(struct XorrisO *xorriso, char *adr, char *show_adr,
    volset= isoburn_get_attached_image(drive);
    if(volset != NULL) { /* The image object is already created */
      iso_image_unref(volset);
+     volset= NULL;
    }
  }
 
diff --git a/libisoburn/trunk/xorriso/xorriso_timestamp.h b/libisoburn/trunk/xorriso/xorriso_timestamp.h
index b6190693..8fe75b93 100644
--- a/libisoburn/trunk/xorriso/xorriso_timestamp.h
+++ b/libisoburn/trunk/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2015.09.28.141723"
+#define Xorriso_timestamP "2015.10.15.170642"