diff --git a/app/templates/eg020_sms_authentication.html b/app/templates/eg020_sms_authentication.html
index 5927b9ce..eee55ec1 100644
--- a/app/templates/eg020_sms_authentication.html
+++ b/app/templates/eg020_sms_authentication.html
@@ -24,7 +24,7 @@ <h4>20. Send an envelope using an Sms-code for multi-factor recipient authentica
     
     <div class="form-group">
         <label for="phoneNumber">SMS Number</label>
-        <input type="tel" class="form-control" id="phoneNumber" name="phoneNumber"
+        <input type="tel" class="form-control" id="phone_number" name="phone_number"
                aria-describedby="accessHelp" placeholder="415-555-1212" required
                value="415-555-1212">
         <small id="accessHelp" class="form-text text-muted">Send a text message to this phone number to verify recipient.</small>