diff --git a/cara/apps/calculator/static/form.html b/cara/apps/calculator/static/form.html
index e109f1e0..62528c8c 100644
--- a/cara/apps/calculator/static/form.html
+++ b/cara/apps/calculator/static/form.html
@@ -86,8 +86,8 @@ Beta v1.0.0 <span style="float:right; font-weight:bold">Please send feedback to
     Start: <input type="time" id="activity_start" name="activity_start" value="09:00" required> &nbsp;&nbsp;
     Finish: <input type="time" id="activity_finish" name="activity_finish" value="18:00" required><br>
     Infected person(s) presence: <br>
-    Start: <input type="time" id="inf_activity_start" name="activity_start" value="09:00" required> &nbsp;&nbsp;
-    Finish: <input type="time" id="inf_activity_finish" name="activity_finish" value="18:00" required><br>
+    Start: <input type="time" id="infected_start" name="infected_start" value="09:00" required> &nbsp;&nbsp;
+    Finish: <input type="time" id="infected_finish" name="infected_finish" value="18:00" required><br>
     <hr width="80%">
 
     <span class="natural disabled">When is the event?</span><br>