diff --git a/.hgignore b/.hgignore
index 8f35298eb..0d04fc2a0 100644
--- a/.hgignore
+++ b/.hgignore
@@ -23,6 +23,7 @@ glob:*.ncb
 glob:*.exe
 glob:*.bat
 glob:platform/macosx/build
+glob:platform/macosx/Build
 glob:platform/macosx/DerivedData
 glob:platform/macosx/*.xcodeproj/bill*
 glob:platform/macosx/*.xcodeproj/xcuserdata