diff --git a/lib/registration.rb b/lib/registration.rb
index 143e5fbae676322512fe9ebbf326ca7a8f8c8bc6..8327848d7ffefcd528d15e0cc1329d0fe4d2aaa4 100644
--- a/lib/registration.rb
+++ b/lib/registration.rb
@@ -278,7 +278,7 @@ class Registration
 			def handle_possible_prev(iq)
 				raise "Action not allowed" unless iq.prev?
 
-				Activation.for(@customer, @tel).then(&:write)
+				Activation.for(@customer, nil, @tel).then(&:write)
 			end
 
 			def addr_and_rate