diff --git a/core/lib/Drupal/Core/Extension/module.api.php b/core/lib/Drupal/Core/Extension/module.api.php
index 3c1c228..2abf196 100644
--- a/core/lib/Drupal/Core/Extension/module.api.php
+++ b/core/lib/Drupal/Core/Extension/module.api.php
@@ -711,8 +711,8 @@ function hook_post_update_NAME(&$sandbox) {
   $blocks = $block_storage->loadMultiple($block_ids);
   /** @var $blocks \Drupal\block\BlockInterface[] */
   foreach ($blocks as $block) {
-    // This block will have an invalid context mapping service and must be
-    // disabled in order to prevent information disclosure.
+    // This block has had conditions removed due to an inability to resolve
+    // contexts in block_update_8001() so disable it.
 
     // Disable currently enabled blocks.
     if ($block_update_8001[$block->id()]['status']) {
diff --git a/core/modules/block/block.post_update.php b/core/modules/block/block.post_update.php
index 17e0497..f208f65 100644
--- a/core/modules/block/block.post_update.php
+++ b/core/modules/block/block.post_update.php
@@ -39,8 +39,8 @@ function block_post_update_disable_blocks_with_missing_contexts() {
   $blocks = $block_storage->loadMultiple($block_ids);
   /** @var $blocks \Drupal\block\BlockInterface[] */
   foreach ($blocks as $block) {
-    // This block will have an invalid context mapping service and must be
-    // disabled in order to prevent information disclosure.
+    // This block has had conditions removed due to an inability to resolve
+    // contexts in block_update_8001() so disable it.
 
     // Disable currently enabled blocks.
     if ($block_update_8001[$block->id()]['status']) {