diff --git a/cara/apps/calculator/templates/calculator.form.html.j2 b/cara/apps/calculator/templates/calculator.form.html.j2
index 82072a83..1e38f217 100644
--- a/cara/apps/calculator/templates/calculator.form.html.j2
+++ b/cara/apps/calculator/templates/calculator.form.html.j2
@@ -94,7 +94,7 @@ v{{ calculator_version }} <span style="float:right; font-weight:bold">Please sen
       <div class="col-xl-3 col-lg-4 col-sm-3">
         &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <label for="room_data_dimensions">Ceiling height:</label> &nbsp;&nbsp;
       </div>
-      <input type="number" step="any" id="ceiling_height" class="non_zero col-xl-3 col-lg-5 col-md-7 col-sm-3 col-3" name="ceiling_height" placeholder="Room ceiling height (m²)" min="0" data-has-radio="#room_data_dimensions">
+      <input type="number" step="any" id="ceiling_height" class="non_zero col-xl-3 col-lg-5 col-md-7 col-sm-3 col-3" name="ceiling_height" placeholder="Room ceiling height (m)" min="0" data-has-radio="#room_data_dimensions">
     </div><br>
 
     Central heating system in use: