diff --git a/en.json b/en.json
index 6f74afd7172500ccf9298ac1801522ea8b86edff..911251ffc659d5d960fb2cd6adf1db247a5208be 100644
--- a/en.json
+++ b/en.json
@@ -498,7 +498,7 @@
         "defaults": {
             "date_separator": "/",
             "date_format": "traditional",
-            "twelvehour": "yes"
+            "twelvehour": "no"
         }
     },
     "notifications": {