diff --git a/theme/boost/scss/moodle/course.scss b/theme/boost/scss/moodle/course.scss
index be13e58b6c8..f9e8c038b15 100644
--- a/theme/boost/scss/moodle/course.scss
+++ b/theme/boost/scss/moodle/course.scss
@@ -821,11 +821,7 @@ span.editinstructions {
     font-weight: normal;
     padding: 2px 18px;
 }
-/* rtl:raw:
-.course_category_tree .category > .info > .categoryname {
-    background-image:url([[pix:moodle|t/collapsed_empty_rtl]]);
-}
- */
+
 .course_category_tree .category.with_children > .info > .categoryname {
     background-image: url([[pix:moodle|t/expanded]]);
     background-repeat: no-repeat;
diff --git a/theme/boost/style/moodle.css b/theme/boost/style/moodle.css
index d0f17200809..4aabba65c76 100644
--- a/theme/boost/style/moodle.css
+++ b/theme/boost/style/moodle.css
@@ -14368,11 +14368,6 @@ span.editinstructions {
   font-weight: normal;
   padding: 2px 18px; }
 
-/* rtl:raw:
-.course_category_tree .category > .info > .categoryname {
-    background-image:url([[pix:moodle|t/collapsed_empty_rtl]]);
-}
- */
 .course_category_tree .category.with_children > .info > .categoryname {
   background-image: url([[pix:moodle|t/expanded]]);
   background-repeat: no-repeat;
diff --git a/theme/classic/style/moodle.css b/theme/classic/style/moodle.css
index 74a3d784a89..a439782f33a 100644
--- a/theme/classic/style/moodle.css
+++ b/theme/classic/style/moodle.css
@@ -14368,11 +14368,6 @@ span.editinstructions {
   font-weight: normal;
   padding: 2px 18px; }
 
-/* rtl:raw:
-.course_category_tree .category > .info > .categoryname {
-    background-image:url([[pix:moodle|t/collapsed_empty_rtl]]);
-}
- */
 .course_category_tree .category.with_children > .info > .categoryname {
   background-image: url([[pix:moodle|t/expanded]]);
   background-repeat: no-repeat;