diff --git a/core/lib/Drupal/Core/Annotation/ContextDefinition.php b/core/lib/Drupal/Core/Annotation/ContextDefinition.php
index 3508c57..587d632 100644
--- a/core/lib/Drupal/Core/Annotation/ContextDefinition.php
+++ b/core/lib/Drupal/Core/Annotation/ContextDefinition.php
@@ -9,6 +9,7 @@
 
 use Drupal\Component\Annotation\Plugin;
 use Drupal\Core\StringTranslation\TranslatableMarkup;
+use Drupal\Core\Annotation\Translation;
 
 /**
  * @defgroup plugin_context Annotation for context definition
@@ -113,8 +114,17 @@ public function __construct(array $values) {
     // used in the classes they pass to.
     foreach (['label', 'description'] as $key) {
       // @todo Remove this workaround in https://www.drupal.org/node/2362727.
-      if (isset($values[$key]) && $values[$key] instanceof TranslatableMarkup) {
-        $values[$key] = (string) $values[$key]->get();
+      if (isset($values[$key])) {
+        $value = $values[$key];
+        if ($value instanceof TranslatableMarkup) {
+          $values[$key] = (string) $value->get();
+        }
+        elseif ($values[$key] instanceof Translation) {
+          $values[$key] = (string) $value;
+        }
+        else {
+          $values[$key] = NULL;
+        }
       }
       else {
         $values[$key] = NULL;
diff --git a/core/lib/Drupal/Core/Annotation/Translation.php b/core/lib/Drupal/Core/Annotation/Translation.php
index 83cd6f6..3332ac9 100644
--- a/core/lib/Drupal/Core/Annotation/Translation.php
+++ b/core/lib/Drupal/Core/Annotation/Translation.php
@@ -96,4 +96,11 @@ public function get() {
     return $this->translation;
   }
 
+  /**
+   * Since Translate annotations can be used in the UI, allow conversion to string.
+   */
+  public function __toString() {
+    return $this->translation->render();
+  }
+
 }