diff --git a/RIGS/templates/partials/event_detail_buttons.html b/RIGS/templates/partials/event_detail_buttons.html
index 4c571f12..f04f20f8 100644
--- a/RIGS/templates/partials/event_detail_buttons.html
+++ b/RIGS/templates/partials/event_detail_buttons.html
@@ -9,7 +9,7 @@
         {% if event.internal %}
             <a class="btn item-add modal-href event-authorise-request
                     {% if event.authorised %}
-                        btn-success active
+                        btn-success active disabled
                     {% elif event.authorisation and event.authorisation.amount != event.total and event.authorisation.last_edited_at > event.auth_request_at %}
                         btn-warning
                     {% elif event.auth_request_to %}
@@ -18,7 +18,7 @@
                         btn-secondary
                     {% endif %}
                     "
-               href="{% url 'event_authorise_request' object.pk %}">
+               {% if event.authorised %}aria-disabled="true"{% else %}href="{% url 'event_authorise_request' object.pk %}"{% endif %}>
                 <span class="fas fa-paper-plane"></span>
                 <span class="d-none d-sm-inline">
                     {% if event.authorised %}
diff --git a/RIGS/views/rigboard.py b/RIGS/views/rigboard.py
index d3ed5a2e..7aa7a149 100644
--- a/RIGS/views/rigboard.py
+++ b/RIGS/views/rigboard.py
@@ -83,6 +83,13 @@ class EventOEmbed(OEmbedView):
     url_name = 'event_embed'
 
 
+def get_related(form, context):  # Get some other objects to include in the form. Used when there are errors but also nice and quick.
+    for field, model in form.related_models.items():
+        value = form[field].value()
+        if value is not None and value != '':
+            context[field] = model.objects.get(pk=value)
+
+
 class EventCreate(generic.CreateView):
     model = models.Event
     form_class = forms.EventForm
@@ -98,11 +105,8 @@ class EventCreate(generic.CreateView):
         if hasattr(form, 'items_json') and re.search(r'"-\d+"', form['items_json'].value()):
             messages.info(self.request, "Your item changes have been saved. Please fix the errors and save the event.")
 
-        # Get some other objects to include in the form. Used when there are errors but also nice and quick.
-        for field, model in form.related_models.items():
-            value = form[field].value()
-            if value is not None and value != '':
-                context[field] = model.objects.get(pk=value)
+        get_related(form, context)
+
         return context
 
     def get_success_url(self):
@@ -121,11 +125,7 @@ class EventUpdate(generic.UpdateView):
 
         form = context['form']
 
-        # Get some other objects to include in the form. Used when there are errors but also nice and quick.
-        for field, model in form.related_models.items():
-            value = form[field].value()
-            if value is not None and value != '':
-                context[field] = model.objects.get(pk=value)
+        get_related(form, context)
 
         return context
 
@@ -312,7 +312,7 @@ class EventAuthorise(generic.UpdateView):
                 messages.add_message(self.request, messages.WARNING,
                                      "This event has already been authorised, but the amount has changed. " +
                                      "Please check the amount and reauthorise.")
-        return super(EventAuthorise, self).get(request, *args, **kwargs)
+        return super().get(request, *args, **kwargs)
 
     def get_form(self, **kwargs):
         form = super().get_form(**kwargs)