diff --git a/CHANGES.md b/CHANGES.md
index e6651c98262..63fa1832738 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -6,6 +6,7 @@ Changes
 
 ### Unreleased
 
+* 2023-09-26 - Bugfix: The smart menu third level arrow was broken, solves #402.
 * 2023-09-22 - Make codechecker happier
 * 2023-09-24 - Test: Behat scenario 'Show hint for self enrolment without an enrolment key' was broken, solves #398.
 * 2023-09-22 - Improvement: Reuse Moodle core function remove_dir(), solves #369.
diff --git a/scss/boost_union/post.scss b/scss/boost_union/post.scss
index 8c6a45dcc76..937a8bcfebd 100644
--- a/scss/boost_union/post.scss
+++ b/scss/boost_union/post.scss
@@ -1251,6 +1251,7 @@ body.pagelayout-login:not(.loginbackgroundimage) #footnote {
                         &:after {
                             content: '\f105';
                             font-family: '#{$fa-style-family}';
+                            font-weight: 900;
                             line-height: 10px;
                             position: absolute;
                             top: 40%;
@@ -1742,6 +1743,7 @@ body.pagelayout-login:not(.loginbackgroundimage) #footnote {
                                     &:before {
                                         content: '\f142';
                                         font-family: '#{$fa-style-family}';
+                                        font-weight: 900;
                                     }
                                     /* The arrow icon after the More menu link text is hidden when the smart menus are
                                        not added */