diff --git a/caimira/apps/calculator/static/js/form.js b/caimira/apps/calculator/static/js/form.js
index de8e1b5f..ed28293e 100644
--- a/caimira/apps/calculator/static/js/form.js
+++ b/caimira/apps/calculator/static/js/form.js
@@ -683,6 +683,7 @@ function validate_form(form) {
   if ($('input[type=radio][id=from_fitting]').prop('checked')) {
     if ($('#CO2_fitting_result').val() == '')
       $("input[type=radio][id=no_ventilation]").prop("checked", true);
+      $("span.error_text").remove();
     on_ventilation_type_change();
   }
 
diff --git a/caimira/apps/templates/base/calculator.form.html.j2 b/caimira/apps/templates/base/calculator.form.html.j2
index 960b3e43..798fd845 100644
--- a/caimira/apps/templates/base/calculator.form.html.j2
+++ b/caimira/apps/templates/base/calculator.form.html.j2
@@ -207,7 +207,7 @@
         <input type="radio" id="natural_ventilation" name="ventilation_type" value="natural_ventilation" data-enables="#DIVnatural_ventilation" data-toggle="modal" data-target="#warning_modal">
           <label for="natural_ventilation">Natural</label>
         <input class="ml-3" type="radio" id="from_fitting" name="ventilation_type" value="from_fitting" data-enables="#DIVfrom_fitting">
-          <label for="from_fitting">Fitting</label>
+          <label for="from_fitting">From Fitting</label>
         </div>
       </div>