diff --git a/src/Bundle/ChillPersonBundle/Serializer/Normalizer/RelationshipNormalizer.php b/src/Bundle/ChillPersonBundle/Serializer/Normalizer/RelationshipNormalizer.php
index 6036a18e9..e410dd90b 100644
--- a/src/Bundle/ChillPersonBundle/Serializer/Normalizer/RelationshipNormalizer.php
+++ b/src/Bundle/ChillPersonBundle/Serializer/Normalizer/RelationshipNormalizer.php
@@ -22,6 +22,7 @@ class RelationshipNormalizer implements NormalizerInterface, NormalizerAwareInte
     {
         return [
             'type' => 'relationship',
+            'id' => $this->normalizer->normalize($relationship->getId()),
             'fromPerson' => $this->normalizer->normalize($relationship->getFromPerson()),
             'toPerson' => $this->normalizer->normalize($relationship->getToPerson()),
             'relation' => $this->normalizer->normalize($relationship->getRelation()),