diff --git a/whipper/common/common.py b/whipper/common/common.py
index f41704c..5e99609 100644
--- a/whipper/common/common.py
+++ b/whipper/common/common.py
@@ -277,9 +277,9 @@ def getRelativePath(targetPath, collectionPath):
 def validate_template(template, kind):
     """Raise exception if disc/track template includes invalid variables."""
     if kind == 'disc':
-        matches = re.findall(r'%[^ABCRSXdrxy]', template)
+        matches = re.findall(r'%[^ABCDRSXdrxy]', template)
     elif kind == 'track':
-        matches = re.findall(r'%[^ABCRSXadnrstxy]', template)
+        matches = re.findall(r'%[^ABCDRSXadnrstxy]', template)
     if '%' in template and matches:
         raise ValueError(kind + ' template string contains invalid '
                          'variable(s): {}'.format(', '.join(matches)))