diff --git a/contentcuration/contentcuration/frontend/shared/mixins.js b/contentcuration/contentcuration/frontend/shared/mixins.js
index 0813a6f53c..fa7625859c 100644
--- a/contentcuration/contentcuration/frontend/shared/mixins.js
+++ b/contentcuration/contentcuration/frontend/shared/mixins.js
@@ -117,6 +117,7 @@ export const constantStrings = createTranslator('ConstantStrings', {
   mp3: 'MP3 audio',
   pdf: 'PDF document',
   epub: 'EPub document',
+  kpub: 'KPub document',
   bloompub: 'BloomPub document',
   jpg: 'JPG image',
   jpeg: 'JPEG image',