diff --git a/poky/bitbake/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.rst b/poky/bitbake/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.rst
index 74a3eb8..6469f9d 100644
--- a/poky/bitbake/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.rst
+++ b/poky/bitbake/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.rst
@@ -108,6 +108,10 @@
       command line option). The task name specified should not include the
       ``do_`` prefix.
 
+   :term:`BB_DEFAULT_UMASK`
+      The default umask to apply to tasks if specified and no task specific
+      umask flag is set.
+
    :term:`BB_DISKMON_DIRS`
       Monitors disk space and available inodes during the build and allows
       you to control the build based on these parameters.