fix backup
diff --git a/extendedcommands.c b/extendedcommands.c
index 104957a..6a00cd3 100644
--- a/extendedcommands.c
+++ b/extendedcommands.c
@@ -335,9 +335,9 @@
 
     char cmd[PATH_MAX];
     if (NULL != backup_name)
-    	sprintf(cmd, "/sbin/nandroid-mobile.sh backup /sdcard/clockworkmod/backup/ %s", backup_name);
-    else
-	sprintf(cmd, "/sbin/nandroid-mobile.sh backup /sdcard/clockworkmod/backup/");
+		sprintf(cmd, "/sbin/nandroid-mobile.sh backup /sdcard/clockworkmod/backup/ %s", backup_name);
+	else
+		sprintf(cmd, "/sbin/nandroid-mobile.sh backup /sdcard/clockworkmod/backup/");
     ui_print("Performing backup...\n");
     int ret = system(cmd);
     if (ret != 0)
diff --git a/extendedcommands.h b/extendedcommands.h
index ddb619c..8a5a1f2 100644
--- a/extendedcommands.h
+++ b/extendedcommands.h
@@ -17,7 +17,7 @@
 ui_set_show_text(int value);
 
 int
-do_nandroid_backup();
+do_nandroid_backup(char* backup_name);
 
 int
 do_nandroid_restore();
diff --git a/recovery.c b/recovery.c
index 1df7739..440167b 100644
--- a/recovery.c
+++ b/recovery.c
@@ -446,7 +446,7 @@
                 show_install_update_menu();
                 break;
             case ITEM_BACKUP:
-                do_nandroid_backup();
+                do_nandroid_backup(NULL);
                 break;
             case ITEM_RESTORE:
                 show_nandroid_restore_menu();