diff --git a/app/assets/javascripts/app/views/layout_ref/communication_overview.jst.eco b/app/assets/javascripts/app/views/layout_ref/communication_overview.jst.eco
index 3803f941d..4428daa32 100644
--- a/app/assets/javascripts/app/views/layout_ref/communication_overview.jst.eco
+++ b/app/assets/javascripts/app/views/layout_ref/communication_overview.jst.eco
@@ -233,11 +233,15 @@ Oliver<br>
                 <h3>2 <%- @T('Attached Files') %></h3>
                 <div class="attachment horizontal">
                   <div class="attachment-name u-highlight">midinotes_view.jpg</div>
-                  <div class="attachment-size">35.5kb</div>
+                  <div class="attachment-size">35.5 kb</div>
                 </div>
                 <div class="attachment horizontal">
                   <div class="attachment-name u-highlight">lyrics_I_Like_it_Loud.txt</div>
-                  <div class="attachment-size">17.1kb</div>
+                  <div class="attachment-size">17.1 kb</div>
+                </div>
+                <div class="attachment horizontal">
+                  <div class="attachment-name u-highlight">something with very long line which is slonger as the container arount it if you can see it I wish you a very happy day.txt</div>
+                  <div class="attachment-size">17.1 kb</div>
                 </div>
               </div>
             </div>
diff --git a/app/assets/stylesheets/zammad.css.scss b/app/assets/stylesheets/zammad.css.scss
index 61a485b3b..8b0bd7398 100644
--- a/app/assets/stylesheets/zammad.css.scss
+++ b/app/assets/stylesheets/zammad.css.scss
@@ -3661,17 +3661,28 @@ footer {
     }
 
       .attachment-name {
+        @extend .u-textTruncate;
         margin-right: 5px;
       }
 
+      .attachment-size {
+        @extend .u-textTruncate;
+        white-space: nowrap;
+        min-width: 40px;
+      }
+
       .attachment-delete {
         color: hsl(198,19%,72%);
         text-decoration: underline;
         display: none;
+        white-space: nowrap;
       }
 
       .attachment:hover .attachment-delete {
+        @extend .u-textTruncate;
+        padding-left: 7px;
         display: block;
+        min-width: 80px;
       }
 
         .attachment-delete .icon {