diff --git a/test/validator/samples/event-modifiers-invalid/errors.json b/test/validator/samples/event-modifiers-invalid/errors.json
index 628bf2eaed..b3a2c0017c 100644
--- a/test/validator/samples/event-modifiers-invalid/errors.json
+++ b/test/validator/samples/event-modifiers-invalid/errors.json
@@ -1,5 +1,5 @@
 [{
-	"message": "Valid event modifiers are preventDefault, stopPropagation, capture, once, passive, nonpassive, self or trusted",
+	"message": "Valid event modifiers are preventDefault, stopPropagation, stopImmediatePropagation, capture, once, passive, nonpassive, self or trusted",
 	"code": "invalid-event-modifier",
 	"start": {
 		"line": 1,