diff --git a/coreos-config/roles/compose_project/templates/matrix/mautrix-slack/config.yaml b/coreos-config/roles/compose_project/templates/matrix/mautrix-slack/config.yaml
index ed775de..6a9f3a8 100644
--- a/coreos-config/roles/compose_project/templates/matrix/mautrix-slack/config.yaml
+++ b/coreos-config/roles/compose_project/templates/matrix/mautrix-slack/config.yaml
@@ -69,7 +69,7 @@ bridge:
     username_template: slack_{{.}}
     # Displayname template for Slack users.
     # TODO: document variables
-    displayname_template: '{{.RealName}} (Slack)'
+    displayname_template: '{{.DisplayName}} (Slack)'
     bot_displayname_template: '{{.Name}} (bot)'
     channel_name_template: '#{{.Name}}'
 {% endraw %}