diff --git a/core/lib/Drupal/Core/Condition/ConditionPluginBase.php b/core/lib/Drupal/Core/Condition/ConditionPluginBase.php
index e75cc1a..196d398 100644
--- a/core/lib/Drupal/Core/Condition/ConditionPluginBase.php
+++ b/core/lib/Drupal/Core/Condition/ConditionPluginBase.php
@@ -108,7 +108,7 @@ public function buildConfigurationForm(array $form, FormStateInterface $form_sta
       $contexts = $form_state->getTemporaryValue('gathered_contexts');
     }
     else {
-      $contexts = $this->contextRepository->getAvailableContexts();
+      $contexts = $this->getContextRepository()->getAvailableContexts();
     }
 
     $form['context_mapping'] = $this->addContextAssignmentElement($this, $contexts);