diff --git a/system/blueprints/config/security.yaml b/system/blueprints/config/security.yaml
index 5309238b8..582157968 100644
--- a/system/blueprints/config/security.yaml
+++ b/system/blueprints/config/security.yaml
@@ -22,6 +22,7 @@ form:
 
         xss_rules:
             type: list
+            style: vertical
             label: PLUGIN_ADMIN.XSS_RULES
             help: PLUGIN_ADMIN.XSS_RULES_HELP
             classes: compact