diff --git a/CHANGES.md b/CHANGES.md
index 70eba8d5f50c5536255e47b053856ff0a36ac42b..84f20a15595c536db64b6ce6f4d41527b1b9aff8 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -6,6 +6,7 @@ Changes
 
 ### Unreleased
 
+* 2019-06-03 - Adjusted columns2.mustache template due to upstream changes in theme Boost.
 * 2019-06-03 - Further formal changes to the renderers to be constistent with Moodle core.
 * 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.
diff --git a/templates/columns2.mustache b/templates/columns2.mustache
index 90ae13aafd5306da2f76e185565976909f726d9f..5634d85020750a325d1c385a85f34794581c649e 100644
--- a/templates/columns2.mustache
+++ b/templates/columns2.mustache
@@ -81,7 +81,7 @@
                     <div> {{{ output.region_main_settings_menu }}} </div>
                 </div>
                 {{/hasregionmainsettingsmenu}}
-                <section id="region-main" {{#hasblocks}}class="has-blocks mb-3"{{/hasblocks}}>
+                <section id="region-main" {{#hasblocks}}class="has-blocks mb-3"{{/hasblocks}} aria-label="{{#str}}content{{/str}}">
 
                     {{#hasregionmainsettingsmenu}}
                         <div class="region_main_settings_menu_proxy"></div>
@@ -96,7 +96,7 @@
 
                 </section>
                 {{#hasblocks}}
-                <section data-region="blocks-column" class="d-print-none">
+                <section data-region="blocks-column" class="d-print-none" aria-label="{{#str}}blocks{{/str}}">
                     {{{ sidepreblocks }}}
                 </section>
                 {{/hasblocks}}
diff --git a/templates/columns2.mustache.original b/templates/columns2.mustache.original
index 7b329cbecfcb7a567ca4018689c42c958cda2118..d0425d39965068722cf0682dbaf932487e5e5de9 100644
--- a/templates/columns2.mustache.original
+++ b/templates/columns2.mustache.original
@@ -68,7 +68,7 @@
                     <div> {{{ output.region_main_settings_menu }}} </div>
                 </div>
                 {{/hasregionmainsettingsmenu}}
-                <section id="region-main" {{#hasblocks}}class="has-blocks mb-3"{{/hasblocks}}>
+                <section id="region-main" {{#hasblocks}}class="has-blocks mb-3"{{/hasblocks}} aria-label="{{#str}}content{{/str}}">
 
                     {{#hasregionmainsettingsmenu}}
                         <div class="region_main_settings_menu_proxy"></div>
@@ -80,7 +80,7 @@
 
                 </section>
                 {{#hasblocks}}
-                <section data-region="blocks-column" class="d-print-none">
+                <section data-region="blocks-column" class="d-print-none" aria-label="{{#str}}blocks{{/str}}">
                     {{{ sidepreblocks }}}
                 </section>
                 {{/hasblocks}}