diff --git a/CHANGES.md b/CHANGES.md
index acaf8a2d57d5560dfe867e93db34c3951ea8a877..9aec3ffc9344b2be91ab75b2056293e5653cb97d 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -6,6 +6,7 @@ Changes
 
 ### Unreleased
 
+* 2019-05-31 - Adjusted function render_help_icon() in core_renderer.php due to upstream changes in theme Boost.
 * 2019-05-31 - Adjusted function render_login() in core_renderer.php due to upstream changes in theme Boost.
 * 2019-05-31 - Adjusted function context_header_settings_menu() in core_renderer.php due to upstream changes in theme Boost.
 * 2019-05-31 - Adjusted function full_header() in core_renderer.php due to upstream changes in theme Boost.
diff --git a/classes/output/core_renderer.php b/classes/output/core_renderer.php
index 787b7bcbedbf812f12c22c03481aa8cfafd7cc32..3e1e716f75b665253cb96ce891f1a25ab5f089bd 100644
--- a/classes/output/core_renderer.php
+++ b/classes/output/core_renderer.php
@@ -432,7 +432,7 @@ class core_renderer extends \core_renderer {
     /**
      * Implementation of user image rendering.
      *
-     * MODIFICATION: This renderer function is copied and modified from /theme/boost/classes/output/core_renderer.php
+     * MODIFICATION: This renderer function is copied and modified from lib/outputrenderers.php
      *
      * @param help_icon $helpicon A help icon instance
      * @return string HTML fragment