diff --git a/lang_data/en/infix.txt b/lang_data/en/infix.txt
index cb9cc0a78..8c83b7d4c 100644
--- a/lang_data/en/infix.txt
+++ b/lang_data/en/infix.txt
@@ -1,4 +1,5 @@
 \.\.\.
 (?<=[a-z])\.(?=[A-Z])
 (?<=[a-zA-Z])-(?=[a-zA-z])
+(?<=[a-zA-Z])--(?=[a-zA-z])
 (?<=[0-9])-(?=[0-9])