diff --git a/CHANGELOG.md b/CHANGELOG.md
index caa09ecb80..9fd5209a30 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+### Added
+- Added `MORE_INFO` and `LESS_INFO` JS constants (for the Research Outputs feature)
 ### Fixed
 - Updated the default font on the 'Download page' to be 'Roboto, Arial, Sans-Serif'
 
diff --git a/app/views/layouts/application.html.erb b/app/views/layouts/application.html.erb
index 8b35e5eec6..9f6a7e1976 100644
--- a/app/views/layouts/application.html.erb
+++ b/app/views/layouts/application.html.erb
@@ -144,7 +144,10 @@
       AUTOCOMPLETE_ARIA_HELPER_EMPTY: _("No results are available for your entry."),
       AUTOCOMPLETE_SEARCHING: _("Searching ..."),
 
-      CURRENT_LOCALE: LocaleService.to_gettext(locale: @current_locale.to_s)
+      CURRENT_LOCALE: LocaleService.to_gettext(locale: @current_locale.to_s),
+
+      MORE_INFO: _("More info"),
+      LESS_INFO: _("Less info")
     }.to_json
     %>