diff --git a/frontend/src/locales/messages/en.json b/frontend/src/locales/messages/en.json
index e72c57882..b7574f0da 100644
--- a/frontend/src/locales/messages/en.json
+++ b/frontend/src/locales/messages/en.json
@@ -1,12 +1,5 @@
 {
 
-  "dateTimeFormats": {
-    "short": {
-      "month": "short",
-      "day": "numeric",
-      "weekday": "long"
-    }
-  },
   "404": {
     "page-not-found": "404 Page Not Found",
     "take-me-home": "Take me Home"
diff --git a/frontend/src/locales/messages/fr.json b/frontend/src/locales/messages/fr.json
index ae695137a..2305b47f9 100644
--- a/frontend/src/locales/messages/fr.json
+++ b/frontend/src/locales/messages/fr.json
@@ -1,12 +1,5 @@
 {
 
-  "dateTimeFormats": {
-    "short": {
-      "month": "short",
-      "day": "numeric",
-      "weekday": "long"
-    }
-  },
   "404": {
     "page-not-found": "404 Page introuvable",
     "take-me-home": "Retour à l'accueil"