diff --git a/mediachanger/castorrmc/h/Castor_limits.h b/mediachanger/castorrmc/h/Castor_limits.h
index 459119a742aec2398b23405e77500ac5a4ee02c8..ec29bfa4cb884415c3f7e15a9ec1b63f16ebe16d 100644
--- a/mediachanger/castorrmc/h/Castor_limits.h
+++ b/mediachanger/castorrmc/h/Castor_limits.h
@@ -15,7 +15,7 @@
 #define _CASTOR_LIMITS_H
 
 	/* all maximum lengths defined below do not include the trailing null */
-#define CA_MAXDENNUM      25    /*  ...  */
+#define CA_MAXDENNUM      27    /*  ...  */
 
 #define CA_MAXCLASNAMELEN 15	/* maximum length for a fileclass name */
 #define	CA_MAXCOMMENTLEN 255	/* maximum length for user comments in metadata */