diff --git a/morituri/common/program.py b/morituri/common/program.py
index a65b9c0..d09f1c2 100644
--- a/morituri/common/program.py
+++ b/morituri/common/program.py
@@ -239,6 +239,7 @@ class Program(log.Loggable):
         v['C'] = '' # catalog number
         v['x'] = profile and profile.extension or 'unknown'
         v['X'] = v['x'].upper()
+        v['y'] = '0000'
 
         v['a'] = v['A']
         if i == 0: