diff --git a/libburn/drive.c b/libburn/drive.c
index ef8bf27..5fb7b91 100644
--- a/libburn/drive.c
+++ b/libburn/drive.c
@@ -402,7 +402,7 @@ void burn_drive_info_free(struct burn_drive_info drive_infos[])
 }
 
 /* Experimental API call */
-int burn_drive_info_forget(struct burn_drive_info *info)
+int burn_drive_info_forget(struct burn_drive_info *info, int force)
 {
 	burn_drive_free(info->drive);
 	return 1;
diff --git a/libburn/libburn.h b/libburn/libburn.h
index 2ddc8e7..16451e3 100644
--- a/libburn/libburn.h
+++ b/libburn/libburn.h
@@ -551,9 +551,15 @@ int burn_drive_scan(struct burn_drive_info *drive_infos[],
     and become unable to inquire or grab it.
     @param drive_info pointer to a single element out of the array
                       obtained from burn_drive_scan() : &(drive_infos[driveno])
+    @param force controls degree of permissible drive usage at the moment this
+                 function is called and amount of automatically provided drive
+                 shutdown : 
+                  0= drive must be ungrabbed and BURN_DRIVE_IDLE
+                  1= try to release drive resp. accept BURN_DRIVE_GRABBING 
+                 Use these two only. Further values are to be defined.
     @return 1 on success, <=0 on failure
 */
-int burn_drive_info_forget(struct burn_drive_info *drive_info);
+int burn_drive_info_forget(struct burn_drive_info *drive_info, int force);
 
 
 /** Frees a burn_drive_info array returned by burn_drive_scan