diff --git a/back-office/app/views/items/export_import.html.erb b/back-office/app/views/items/export_import.html.erb
index a3f1158..7a2ba0b 100644
--- a/back-office/app/views/items/export_import.html.erb
+++ b/back-office/app/views/items/export_import.html.erb
@@ -15,5 +15,7 @@
 
   <br />
   <p><label for="output_area">Output area: </label>
-  <div id="output_area" style="width: 100%;height: 14em;outline: 1px solid #A9A9A9; overflow: scroll"><%= @output.html_safe %></div>
+  <div id="output_area" style="width: 100%;height: 14em;outline: 1px solid #A9A9A9; overflow: scroll"><%= unless @output.nil?
+    @output.html_safe end %>
+  </div>
 <% end %>