diff --git a/src/main/resources/l10n/JabRef_en.properties b/src/main/resources/l10n/JabRef_en.properties
index c81ad5f95b3..28f5f56b5af 100644
--- a/src/main/resources/l10n/JabRef_en.properties
+++ b/src/main/resources/l10n/JabRef_en.properties
@@ -2210,6 +2210,7 @@ A\ contribution\ to\ a\ collection\ which\ forms\ a\ self-contained\ unit\ with\
 An\ article\ in\ a\ conference\ proceedings.=An article in a conference proceedings.
 Technical\ or\ other\ documentation,\ not\ necessarily\ in\ printed\ form.=Technical or other documentation, not necessarily in printed form.
 A\ fallback\ type\ for\ entries\ which\ do\ not\ fit\ into\ any\ other\ category.=A fallback type for entries which do not fit into any other category.
+Similar\ to\ "Thesis"\ except\ that\ the\ type\ field\ is\ optional\ and\ defaults\ to\ the\ localised\ term\ \ Master's\ thesis.=Similar to "Thesis" except that the type field is optional and defaults to the localised term  Master's thesis.
 Similar\ to\ "Thesis"\ except\ that\ the\ type\ field\ is\ optional\ and\ defaults\ to\ the\ localised\ term\ PhD\ thesis.=Similar to "Thesis" except that the type field is optional and defaults to the localised term PhD thesis.
 A\ single-volume\ conference\ proceedings.\ This\ type\ is\ very\ similar\ to\ "Collection".=A single-volume conference proceedings. This type is very similar to "Collection".
 Similar\ to\ "Report"\ except\ that\ the\ type\ field\ is\ optional\ and\ defaults\ to\ the\ localised\ term\ technical\ report.=Similar to "Report" except that the type field is optional and defaults to the localised term technical report.