diff --git a/ruby/lib/jam_ruby/models/notification.rb b/ruby/lib/jam_ruby/models/notification.rb
index e0ec6590b..b0cb8a3bb 100644
--- a/ruby/lib/jam_ruby/models/notification.rb
+++ b/ruby/lib/jam_ruby/models/notification.rb
@@ -57,7 +57,7 @@ module JamRuby
 
         # remove all notifications related to this session if it's not found
         if session.nil?
-          Notification.delete_all "(session_id = '#{session_id}')"
+          Notification.delete_all "(session_id = '#{self.session_id}')"
         end
       end