diff --git a/.hgignore b/.hgignore
index 14e7f7a85d..353d320a34 100644
--- a/.hgignore
+++ b/.hgignore
@@ -1,6 +1,7 @@
 # netbeans temp & private files
 /?target/
 nbactions.*\.xml
+/?nbproject/
 nb-configuration\.xml
 # MacOS X Files
 \.DS_Store$