diff --git a/scstadmin/scstadmin.sysfs/scstadmin b/scstadmin/scstadmin.sysfs/scstadmin
index 84e539a61..cdb54ca98 100755
--- a/scstadmin/scstadmin.sysfs/scstadmin
+++ b/scstadmin/scstadmin.sysfs/scstadmin
@@ -3683,7 +3683,7 @@ sub listAttributes {
 
 				next;
 			}
-			$l_value = length($value) if ($l_value < length($value));
+			$l_value = length($value) if (defined($value) && $l_value < length($value));
 		}
 	}