diff --git a/apiserver/apiserver/api/utils.py b/apiserver/apiserver/api/utils.py
index 9f74c5f..87605d7 100644
--- a/apiserver/apiserver/api/utils.py
+++ b/apiserver/apiserver/api/utils.py
@@ -407,6 +407,8 @@ def register_user(data, user):
 
     gen_search_strings()
 
+    cache.set('sign', 'Welcome to Protospace, {}!'.format(data['first_name']))
+
 
 BLANK_FORM = 'misc/blank_member_form.pdf'
 def gen_member_forms(member):