diff --git a/src/Document/PrimaryData/PrimaryDataInterface.php b/src/Document/PrimaryData/PrimaryDataInterface.php
index 89967c5..1477328 100644
--- a/src/Document/PrimaryData/PrimaryDataInterface.php
+++ b/src/Document/PrimaryData/PrimaryDataInterface.php
@@ -16,6 +16,4 @@
 interface PrimaryDataInterface extends \JsonSerializable
 {
     public function hasLinkTo(ResourceObject $resource): bool;
-
-    public function jsonSerialize();
 }