diff --git a/gui/assets/lang/lang-en.json b/gui/assets/lang/lang-en.json
index 527f4997..db8ef381 100644
--- a/gui/assets/lang/lang-en.json
+++ b/gui/assets/lang/lang-en.json
@@ -212,6 +212,7 @@
    "When adding a new folder, keep in mind that the Folder ID is used to tie folders together between devices. They are case sensitive and must match exactly between all devices.": "When adding a new folder, keep in mind that the Folder ID is used to tie folders together between devices. They are case sensitive and must match exactly between all devices.",
    "Yes": "Yes",
    "You must keep at least one version.": "You must keep at least one version.",
+   "days": "days",
    "full documentation": "full documentation",
    "items": "items",
    "{%device%} wants to share folder \"{%folder%}\".": "{{device}} wants to share folder \"{{folder}}\"."