diff --git a/.gitignore b/.gitignore
index 664990506..ec57c27de 100644
--- a/.gitignore
+++ b/.gitignore
@@ -75,6 +75,7 @@ src/stamp-mutter-enum-types.h
 src/mutter-marshal.[ch]
 src/stamp-mutter-marshal.h
 src/meta-dbus-xrandr.[ch]
+src/meta-dbus-idle-monitor.[ch]
 src/mutter-plugins.pc
 doc/reference/*.args
 doc/reference/*.bak