diff --git a/resources/views/list/accounts.blade.php b/resources/views/list/accounts.blade.php
index 7ff9b5fc7c..12431be966 100644
--- a/resources/views/list/accounts.blade.php
+++ b/resources/views/list/accounts.blade.php
@@ -41,11 +41,11 @@
             @endif
         </td>
             @if($account->lastActivityDate)
-                <td data-value="{{$account->lastActivityDate->format('Y-m-d')}}">
+                <td data-value="{{$account->lastActivityDate->format('U')}}">
                     {{{$account->lastActivityDate->format('j F Y')}}}
                 </td>
             @else
-                <td>
+                <td data-value="0">
                     <em>Never</em>
                 </td>
             @endif
diff --git a/resources/views/list/categories.blade.php b/resources/views/list/categories.blade.php
index b7c1bd1c2d..2c5b166c43 100644
--- a/resources/views/list/categories.blade.php
+++ b/resources/views/list/categories.blade.php
@@ -24,11 +24,11 @@
             <a href="{{route('categories.show',$category->id)}}" title="{{{$category->name}}}">{{{$category->name}}}</a>
         </td>
         @if($category->lastActivity)
-            <td data-value="{{$category->lastActivity->format('Y-m-d')}}">
+            <td data-value="{{$category->lastActivity->format('U')}}">
                 {{$category->lastActivity->format('jS F Y')}}
             </td>
         @else
-            <td>
+            <td data-value="0">
                 <em>Never</em>
             </td>
         @endif