diff --git a/make-includes/build_lecture_rules.make b/make-includes/build_lecture_rules.make
index a51625b..3c4ed3d 100755
--- a/make-includes/build_lecture_rules.make
+++ b/make-includes/build_lecture_rules.make
@@ -241,7 +241,8 @@
 # Link the appropriate files to the deployment directory, then synchronise this
 # with Blackboard. This relies on the environment variable HANDBOOK_INSTALL_ROOT
 # being defined, and that it points to a valid directory. Note that all existing
-# symbolic links in the entire lectures deployment tree are deleted first.
+# symbolic links under the install directory are deleted first to ensure that
+# there are no dangling links.
 #
 # See build_document_rules.make for an explanation of why the install
 # uses a foreach.