diff --git a/core/modules/block/src/BlockListBuilder.php b/core/modules/block/src/BlockListBuilder.php
index 6288824..43d7a1c 100644
--- a/core/modules/block/src/BlockListBuilder.php
+++ b/core/modules/block/src/BlockListBuilder.php
@@ -192,7 +192,7 @@ protected function buildBlocksForm() {
 
     // Loop over each region and build blocks.
     $regions = $this->systemRegionList($this->getThemeName(), REGIONS_VISIBLE);
-    $block_regions_with_disabled = $regions + array(BlockInterface::BLOCK_REGION_NONE => BlockInterface::BLOCK_REGION_NONE);
+    $block_regions_with_disabled = $regions + array(BlockInterface::BLOCK_REGION_NONE => $this->t('Disabled', array(), array('context' => 'Plural')));
     foreach ($block_regions_with_disabled as $region => $title) {
       $form['#tabledrag'][] = array(
         'action' => 'match',
@@ -215,9 +215,9 @@ protected function buildBlocksForm() {
         ),
       );
       $form['region-' . $region]['title'] = array(
-        '#prefix' => $region != BlockInterface::BLOCK_REGION_NONE ? $title : $this->t('Disabled', array(), array('context' => 'Plural')),
+        '#prefix' => $region != BlockInterface::BLOCK_REGION_NONE ? $title : $block_regions_with_disabled[$region],
         '#type' => 'link',
-        '#title' => $this->t('Place block'),
+        '#title' => $this->t('Place block <span class="visually-hidden">in the %region region</span>', ['%region' => $block_regions_with_disabled[$region]]),
         '#url' => Url::fromRoute('block.admin_library', ['theme' => $this->getThemeName()], ['query' => ['region' => $region]]),
         '#wrapper_attributes' => array(
           'colspan' => 5,