diff --git a/theme/boost/scss/moodle/bootstrap-rtl.scss b/theme/boost/scss/moodle/bootstrap-rtl.scss
index 659cc1b9a4b..a2d412721fd 100644
--- a/theme/boost/scss/moodle/bootstrap-rtl.scss
+++ b/theme/boost/scss/moodle/bootstrap-rtl.scss
@@ -12,3 +12,11 @@
         content: "#{$breadcrumb-divider}"; /* stylelint-disable-line declaration-block-no-duplicate-properties */
     }
 }
+
+/*rtl:raw:
+.dropdown-menu {
+    right: auto;
+    left: 0;
+    text-align: right;
+}
+*/
\ No newline at end of file
diff --git a/theme/boost/scss/moodle/bs4alphacompat.scss b/theme/boost/scss/moodle/bs4alphacompat.scss
index f3181caefc2..599c67d092d 100644
--- a/theme/boost/scss/moodle/bs4alphacompat.scss
+++ b/theme/boost/scss/moodle/bs4alphacompat.scss
@@ -216,16 +216,4 @@ $bs4aspacers: map-merge((
   .col-xs-#{$i} {
     @extend .col-#{$i};
   }
-}
-
-// These have been removed in BS4 Stable. Adding in so RTL dropdowns will work.
-/*rtl:raw:
-.dropdown-menu-right {
-    right: 0;
-    left: auto;
-}
-.dropdown-menu-left {
-    right: auto;
-    left: 0;
-}
-*/
+}
\ No newline at end of file