diff --git a/en.json b/en.json
index db9b2857a2eb7d44bfaa7fb772b24668c2e0a52b..61d5b47f30e6dcbd487a2e0be186263f964947fb 100644
--- a/en.json
+++ b/en.json
@@ -75,6 +75,12 @@
                     "single": "{{user}} is typing…",
                     "multiple": "{{userlist}} and {{user}} are typing…",
                     "several": "Several people are typing…"
+                },
+                "system": {
+                    "user_joined": "joined.",
+                    "user_left": "left.",
+                    "added_by": "added by",
+                    "removed_by": "removed by"
                 }
             },
             "groups": {