diff --git a/chrome/locale/en-US/zotero/preferences.ftl b/chrome/locale/en-US/zotero/preferences.ftl
index 7c42d0ebe6..921d10365b 100644
--- a/chrome/locale/en-US/zotero/preferences.ftl
+++ b/chrome/locale/en-US/zotero/preferences.ftl
@@ -39,8 +39,8 @@ preferences-item-pane-header-locale = Header Language:
 preferences-item-pane-header-missing-style = Missing style: <{ $shortName }>
 
 preferences-locate-library-lookup-intro = Library Lookup can find a resource online using your library’s OpenURL resolver.
-preferences-locate-resolver = Resolver
-preferences-locate-base-url = Base URL
+preferences-locate-resolver = Resolver:
+preferences-locate-base-url = Base URL:
 
 preferences-quickCopy-minus =
     .aria-label = { general-minus }