diff --git a/app/assets/stylesheets/dossiers_table.scss b/app/assets/stylesheets/dossiers_table.scss
index 9175babc7..dfcacfecd 100644
--- a/app/assets/stylesheets/dossiers_table.scss
+++ b/app/assets/stylesheets/dossiers_table.scss
@@ -51,7 +51,7 @@
   }
 
   .number-col {
-    width: 110px;
+    white-space: nowrap;
   }
 
   .folder-col {
diff --git a/app/assets/stylesheets/table.scss b/app/assets/stylesheets/table.scss
index 6482b807b..6c955a29e 100644
--- a/app/assets/stylesheets/table.scss
+++ b/app/assets/stylesheets/table.scss
@@ -9,7 +9,8 @@
     border-top: 1px solid $border-grey;
   }
 
-  td {
+  td,
+  th[scope="row"] {
     @include vertical-padding($default-spacer);
     vertical-align: middle;
   }
diff --git a/app/views/users/dossiers/_dossiers_list.html.haml b/app/views/users/dossiers/_dossiers_list.html.haml
index 3d043ac56..68e6a6fec 100644
--- a/app/views/users/dossiers/_dossiers_list.html.haml
+++ b/app/views/users/dossiers/_dossiers_list.html.haml
@@ -2,17 +2,17 @@
   %table.table.dossiers-table.hoverable
     %thead
       %tr
-        %th.number-col= t('views.users.dossiers.dossiers_list.n_dossier')
-        %th= t('views.users.dossiers.dossiers_list.procedure')
+        %th.number-col{ scope: :col }= t('views.users.dossiers.dossiers_list.n_dossier')
+        %th{ scope: :col }= t('views.users.dossiers.dossiers_list.procedure')
         - if dossiers.present?
-          %th= t('views.users.dossiers.dossiers_list.requester')
-        %th.status-col= t('views.users.dossiers.dossiers_list.status')
-        %th.updated-at-col= t('views.users.dossiers.dossiers_list.updated')
-        %th.sr-only= t('views.users.dossiers.dossiers_list.actions')
+          %th{ scope: :col }= t('views.users.dossiers.dossiers_list.requester')
+        %th.status-col{ scope: :col }= t('views.users.dossiers.dossiers_list.status')
+        %th.updated-at-col{ scope: :col }= t('views.users.dossiers.dossiers_list.updated')
+        %th.sr-only{ scope: :col }= t('views.users.dossiers.dossiers_list.actions')
     %tbody
       - dossiers.each do |dossier|
         %tr{ data: { 'dossier-id': dossier.id } }
-          %td.number-col
+          %th.number-col{ scope: :row }
             = link_to(url_for_dossier(dossier), class: 'cell-link', tabindex: -1) do
               %span.icon.folder
               = dossier.id