diff --git a/docs/source/guides/admin-guides/references/man5/site.5.rst b/docs/source/guides/admin-guides/references/man5/site.5.rst
index 35c59d2b7..6adab15b4 100644
--- a/docs/source/guides/admin-guides/references/man5/site.5.rst
+++ b/docs/source/guides/admin-guides/references/man5/site.5.rst
@@ -259,6 +259,7 @@ site Attributes:
                   them.
   
    installdir:  The local directory name used to hold the node deployment packages.
+                It must be the full path including the leading '/'.
   
    installloc:  The location from which the service nodes should mount the 
                 deployment packages in the format hostname:/path.  If hostname is