diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index 26f62320b3b..a509d3bd7a6 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -7391,6 +7391,7 @@ function picto_from_langcode($codelang, $moreatt = '')
 		'da_DA' => 'dk',
 		'fr_CA' => 'mq',
 		'sv_SV' => 'se',
+		'sw_SW' => 'unknown',
 		'AQ' => 'unknown',
 		'CW' => 'unknown',
 		'IM' => 'unknown',