diff --git a/theme/boost/scss/moodle/navbar.scss b/theme/boost/scss/moodle/navbar.scss
index 257861bc5b4..4eaae957fa8 100644
--- a/theme/boost/scss/moodle/navbar.scss
+++ b/theme/boost/scss/moodle/navbar.scss
@@ -123,6 +123,11 @@
                 }
             }
         }
+        @include media-breakpoint-down(sm) {
+            .langbutton {
+                display: none;
+            }
+        }
     }
     .moodle-actionmenu .menubar,
     .action-menu-trigger .dropdown {
diff --git a/theme/boost/style/moodle.css b/theme/boost/style/moodle.css
index b33cb59e535..bf9feca9986 100644
--- a/theme/boost/style/moodle.css
+++ b/theme/boost/style/moodle.css
@@ -20946,6 +20946,9 @@ div.editor_atto_toolbar button .icon {
     content: "\f00c";
     font-size: 0.75rem;
     padding-left: .25rem; }
+  @media (max-width: 767.98px) {
+    .navbar.fixed-top .langmenu .langbutton {
+      display: none; } }
   .navbar.fixed-top .moodle-actionmenu .menubar,
   .navbar.fixed-top .action-menu-trigger .dropdown {
     height: 100%;
diff --git a/theme/classic/style/moodle.css b/theme/classic/style/moodle.css
index 5f782bb5af8..ce3c96f0f10 100644
--- a/theme/classic/style/moodle.css
+++ b/theme/classic/style/moodle.css
@@ -20892,6 +20892,9 @@ div.editor_atto_toolbar button .icon {
     content: "\f00c";
     font-size: 0.75rem;
     padding-left: .25rem; }
+  @media (max-width: 767.98px) {
+    .navbar.fixed-top .langmenu .langbutton {
+      display: none; } }
   .navbar.fixed-top .moodle-actionmenu .menubar,
   .navbar.fixed-top .action-menu-trigger .dropdown {
     height: 100%;