diff --git a/.gitignore b/.gitignore
index e6d299b..f2d4c76 100644
--- a/.gitignore
+++ b/.gitignore
@@ -30,3 +30,4 @@ Documentation/~$4201DManual.docx
 cpld/db/RAM4GS.db_info
 cpld/db/RAM4GS.tmw_info
 cpld/RAM4GS.qws
+Documentation/Thumbs.db