diff --git a/centreon-plugins/centreon/common/emc/navisphere/mode/spcomponents/cable.pm b/centreon-plugins/centreon/common/emc/navisphere/mode/spcomponents/cable.pm
index 56d4fca34..451032f56 100644
--- a/centreon-plugins/centreon/common/emc/navisphere/mode/spcomponents/cable.pm
+++ b/centreon-plugins/centreon/common/emc/navisphere/mode/spcomponents/cable.pm
@@ -39,6 +39,7 @@ use strict;
 use warnings;
 
 my @conditions = (
+    ['^(.*Unknown.*)$' => 'WARNING'],
     ['^(?!(Present|Valid)$)' => 'CRITICAL'],
 );