diff --git a/BaseTools/.gitignore b/BaseTools/.gitignore
index a45689bc89..ec9c69f8b2 100644
--- a/BaseTools/.gitignore
+++ b/BaseTools/.gitignore
@@ -17,4 +17,5 @@ Source/C/VfrCompile/VfrTokens.h
 Source/C/bin/
 Source/C/libs/
 Bin/Win32
-Lib
\ No newline at end of file
+Lib
+BaseToolsBuild/
\ No newline at end of file