diff --git a/en.lang b/en.lang
index 68788bc3..e57c6b6d 100644
--- a/en.lang
+++ b/en.lang
@@ -52,6 +52,7 @@ language:
 
       #    Systemwörterbücher
       sys-dic: { name: en/lingo-dic.txt, txt-format: WordClass, separator: '=' }
+      sys-syn: { name: en/lingo-syn.txt, txt-format: KeyValue, separator: '=', def-wc: y }
       sys-mul: { name: en/lingo-mul.txt, txt-format: SingleWord, use-lex: 'sys-dic', def-wc: m }
 
       #    Benutzerwörterbücher
diff --git a/en/lingo-syn.txt b/en/lingo-syn.txt
new file mode 100644
index 00000000..e69de29b