diff --git a/chunkie/@chunker/chunker.m b/chunkie/@chunker/chunker.m
index 1ad1317..e6a4a48 100644
--- a/chunkie/@chunker/chunker.m
+++ b/chunkie/@chunker/chunker.m
@@ -88,6 +88,7 @@
         nstor
         wtsstor
         datastor
+        kappa
     end        
     properties(SetAccess=private)
         nchmax