diff --git a/CBM-FileBrowser_v1.6/sources/CBM-FileBrowser.asm b/CBM-FileBrowser_v1.6/sources/CBM-FileBrowser.asm
index f561a86..f06e46d 100644
--- a/CBM-FileBrowser_v1.6/sources/CBM-FileBrowser.asm
+++ b/CBM-FileBrowser_v1.6/sources/CBM-FileBrowser.asm
@@ -4271,6 +4271,7 @@ extensions
 !tx "nib",0
 !tx "nbz",0
 !tx "lst",0
+!tx "t64",0
 ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 extensions_max = * - extensions