diff --git a/framework/core/src/Api/Serializers/DiscussionBasicSerializer.php b/framework/core/src/Api/Serializers/DiscussionBasicSerializer.php
index b1c09ed4b..d9f69eedd 100644
--- a/framework/core/src/Api/Serializers/DiscussionBasicSerializer.php
+++ b/framework/core/src/Api/Serializers/DiscussionBasicSerializer.php
@@ -2,6 +2,8 @@
 
 class DiscussionBasicSerializer extends BaseSerializer
 {
+    protected static $relationships = [];
+
     /**
      * The resource type.
      *
diff --git a/framework/core/src/Api/Serializers/PostBasicSerializer.php b/framework/core/src/Api/Serializers/PostBasicSerializer.php
index 25aa96518..f8cfaae0b 100644
--- a/framework/core/src/Api/Serializers/PostBasicSerializer.php
+++ b/framework/core/src/Api/Serializers/PostBasicSerializer.php
@@ -2,6 +2,8 @@
 
 class PostBasicSerializer extends BaseSerializer
 {
+    protected static $relationships = [];
+
     /**
      * The resource type.
      *