diff --git a/colab/super_archives/templatetags/form_field.py b/colab/super_archives/templatetags/form_field.py
index b8353ae..8c987ae 100644
--- a/colab/super_archives/templatetags/form_field.py
+++ b/colab/super_archives/templatetags/form_field.py
@@ -38,7 +38,7 @@ class RenderFormField(template.Node):
         try:
             default_value = self.default_value_nocontext.resolve(context)
         except template.VariableDoesNotExist:
-            pass
+            default_value = ''
         
         if editable:
             form_field_tag = '<br/>' + str(form_field)
diff --git a/colab/views.py b/colab/views.py
index fe91705..55547bd 100644
--- a/colab/views.py
+++ b/colab/views.py
@@ -104,8 +104,13 @@ def user_profile(request, user, email_address=None, editable=False, form=None):
     emails = Message.objects.raw(query)
     n_sent = Message.objects.filter(from_address__in=email_addresses).count()    
 
+    if user:
+        profile = user.profile
+    else:
+        profile = None
+
     template_data = {
-        'user_profile': user.profile or None,
+        'user_profile': profile,
         'email_address': email_address,
         'emails': emails or [],
         'form': form,
--
libgit2 0.21.2