diff --git a/Resources/views/FamilyMember/index.html.twig b/Resources/views/FamilyMember/index.html.twig
index f41d114f2..b0d1f3fc5 100644
--- a/Resources/views/FamilyMember/index.html.twig
+++ b/Resources/views/FamilyMember/index.html.twig
@@ -46,7 +46,7 @@
             </td>
             <td>
                 {% if f.birthdate is not null %}
-                    {{ f.birthdate|localizeddate('long', 'none') }}
+                    {{ f.birthdate|format_date('long', 'none') }}
                 {% else %}
                     <span class="chill-no-data-statement">{{ 'Not given'|trans }}</span>
                 {% endif %}
@@ -56,9 +56,9 @@
             </td>
             <td>
                 {% if f.endDate is not null %}
-                    {{ 'Member since %startDate% until %endDate%'|trans( { '%startDate%': f.startDate|localizeddate('long', 'none'), '%endDate%': f.endDate|localizeddate('long', 'none') } ) }}
+                    {{ 'Member since %startDate% until %endDate%'|trans( { '%startDate%': f.startDate|format_date('long', 'none'), '%endDate%': f.endDate|format_date('long', 'none') } ) }}
                 {% else %}
-                    {{ 'Member since %startDate%'|trans( { '%startDate%': f.startDate|localizeddate('long', 'none') } ) }}
+                    {{ 'Member since %startDate%'|trans( { '%startDate%': f.startDate|format_date('long', 'none') } ) }}
                 {% endif %}
             </td>
             <td>
diff --git a/Resources/views/FamilyMember/view.html.twig b/Resources/views/FamilyMember/view.html.twig
index 729f6b196..e756a6c0f 100644
--- a/Resources/views/FamilyMember/view.html.twig
+++ b/Resources/views/FamilyMember/view.html.twig
@@ -19,16 +19,16 @@
     <dt>{{ 'family membership period'|trans }}</dt>
     <dd>
         {% if familyMember.endDate is not null %}
-            {{ 'Member since %startDate% until %endDate%'|trans( { '%startDate%': familyMember.startDate|localizeddate('long', 'none'), '%endDate%': familyMember.endDate|localizeddate('long', 'none') } ) }}
+            {{ 'Member since %startDate% until %endDate%'|trans( { '%startDate%': familyMember.startDate|format_date('long', 'none'), '%endDate%': familyMember.endDate|format_date('long', 'none') } ) }}
         {% else %}
-            {{ 'Member since %startDate%'|trans( { '%startDate%': familyMember.startDate|localizeddate('long', 'none') } ) }}
+            {{ 'Member since %startDate%'|trans( { '%startDate%': familyMember.startDate|format_date('long', 'none') } ) }}
         {% endif %}
     </dd>
 
     <dt>{{ 'Birthdate'|trans }}</dt>
     <dd>
         {%- if familyMember.birthdate is not null -%}
-        {{ familyMember.birthdate|localizeddate('long', 'none') }}
+        {{ familyMember.birthdate|format_date('long', 'none') }}
         {%- else -%}
         <span class="chill-no-data-statement">{{ 'Not given'|trans }}</span>
         {%- endif -%}