diff --git a/CHANGELOG.md b/CHANGELOG.md
index 94489398e..85e3771e0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -78,6 +78,7 @@ and this project adheres to
 * [person] Trailing guillemet removed (https://gitlab.com/champs-libres/departement-de-la-vendee/chill/-/issues/530)
 * [notification] Display of social action within workflow notification set to display block (https://gitlab.com/champs-libres/departement-de-la-vendee/chill/-/issues/537)
 * [onthefly] trim trailing whitespace in email of person and thirdparty (https://gitlab.com/champs-libres/departement-de-la-vendee/chill/-/issues/542)
+* [person] fix bug when phonenumber or mobile number is left empty (https://gitlab.com/champs-libres/departement-de-la-vendee/chill/-/issues/546)
 
 ## Test releases
 
diff --git a/src/Bundle/ChillMainBundle/Serializer/Normalizer/PhonenumberNormalizer.php b/src/Bundle/ChillMainBundle/Serializer/Normalizer/PhonenumberNormalizer.php
index 7eb323754..15a75f9c9 100644
--- a/src/Bundle/ChillMainBundle/Serializer/Normalizer/PhonenumberNormalizer.php
+++ b/src/Bundle/ChillMainBundle/Serializer/Normalizer/PhonenumberNormalizer.php
@@ -40,7 +40,11 @@ class PhonenumberNormalizer implements ContextAwareNormalizerInterface, Denormal
      */
     public function denormalize($data, $type, $format = null, array $context = [])
     {
-        if ('' === trim($data)) {
+        if (null === $data) {
+            return null;
+        }
+
+        if (null !== $data && '' === trim($data)) {
             return null;
         }