diff --git a/modules/jquery.wikiEditor.toolbar.config.js b/modules/jquery.wikiEditor.toolbar.config.js
index e195f425..52c49b5e 100644
--- a/modules/jquery.wikiEditor.toolbar.config.js
+++ b/modules/jquery.wikiEditor.toolbar.config.js
@@ -83,6 +83,7 @@ getDefaultConfig: function () {
 								'it': [2, -790],
 								'ky': [2, -934],
 								'nl': [2, -790],
+								'os': [2, -934],
 								'pt': [2, -862],
 								'pt-br': [2, -862],
 								'pl': [2, -862],