diff --git a/.hgignore b/.hgignore
index 5fdc865af..a713c6bf0 100644
--- a/.hgignore
+++ b/.hgignore
@@ -18,5 +18,5 @@
 (^|/)\.DS_Store$
 
 # Files generated by Windows Explorer
-(^|/)Desktop\.ini$
-(^|/)Thumbs\.db$
+(^|/)[dD]esktop\.ini$
+(^|/)[tT]humbs\.db$