diff --git a/pinc/LPage.inc b/pinc/LPage.inc
index 17f4085314..89224f4cbd 100644
--- a/pinc/LPage.inc
+++ b/pinc/LPage.inc
@@ -333,6 +333,7 @@ the project will automatically be made unavailable.";
 
         // Now determine whether the project as a whole should be marked bad.
         // We need 10 or more bad pages reported by 3 or more distinct users.
+        // (Note duplication of code with pages_indicate_bad_project() in automodify.php)
 
         $n_bad_pages =
             Project_getNumPagesInState(
diff --git a/tools/project_manager/automodify.php b/tools/project_manager/automodify.php
index 99821180d7..9b0a426a71 100644
--- a/tools/project_manager/automodify.php
+++ b/tools/project_manager/automodify.php
@@ -52,6 +52,8 @@ function pages_indicate_bad_project( $projectid, $round )
 {
     global $trace;
 
+    // (Note duplication of code with LPage::markAsBad in LPage.inc)
+
     // If it has no bad pages, it's good.
     //
     $n_bad_pages = Project_getNumPagesInState($projectid,$round->page_bad_state);