diff --git a/c3l_membership/templates/member.html b/c3l_membership/templates/member.html
--- a/c3l_membership/templates/member.html
+++ b/c3l_membership/templates/member.html
@@ -88,17 +88,17 @@
     {% elif form.payment.data == 'cash' %}
       <p>{% trans %}Please bring {{ price }}€ with you the next time you meet us!{% endtrans %}</p>
     {% elif form.payment.data in config["CRYPTOCURRENCIES"] %}
-      <div class="btccontainer">
+      <div class="cryptocontainer">
         <div>
-          <ul class="btctext">
+          <ul class="cryptotext">
             <li><b>{% trans %}Address:{% endtrans %}</b> {{ config["CRYPTOCURRENCIES"][form.payment.data]["ADDRESS"] }}</li>
             <li><b>{% trans %}Label:{% endtrans %}</b> Membership Fee</li>
             <li><b>{% trans %}Message:{% endtrans %}</b> {{ year }} {{ form.username.data }}</li>
             <li><b>{% trans %}Amount:{% endtrans %}</b> {{ price }} {{ config["CRYPTOCURRENCIES"][form.payment.data]["COMMODITY"] }}</li>
           </ul>
         </div>
-        {% set crypto_url={{ config["CRYPTOCURRENCIES"][form.payment.data]["URL"] }}.format(amount=price, year=year, username=form.username.data) %}
-        <div><img class="btcqrcode" src="{{ qrcode(crypto_url) }}" /></div>
+        {% set crypto_url=config["CRYPTOCURRENCIES"][form.payment.data]["URL"].format(amount=price, year=year, username=form.username.data) %}
+        <div><img class="cryptoqrcode" src="{{ qrcode(crypto_url) }}" /></div>
       </div>
     {% elif form.payment.data == 'digicash' %}
       <div class="digicash">