diff --git a/.hgignore b/.hgignore
index 0edb24ab8..36c9030da 100644
--- a/.hgignore
+++ b/.hgignore
@@ -24,3 +24,5 @@
 # Files generated by Windows Explorer
 (^|/)[dD]esktop\.ini$
 (^|/)[tT]humbs\.db$
+syntax: glob
+build/*