diff --git a/bacula/files/fileset.Default.conf b/bacula/files/fileset.Default.conf
index 09c8700..1fb0f56 100644
--- a/bacula/files/fileset.Default.conf
+++ b/bacula/files/fileset.Default.conf
@@ -10,6 +10,7 @@ FileSet {
             onefs = yes
         }
         File = "|sh -c 'mount | awk \"{ if (/^\\/dev\\//) { print \\$3} }\"'"
+        ExcludeDirContaining = .nobackup
     }
 }