diff --git a/test/custom-elements/samples/extended-builtin/_config.js b/test/custom-elements/samples/extended-builtin/_config.js
index 08580e780a..cbd57acc65 100644
--- a/test/custom-elements/samples/extended-builtin/_config.js
+++ b/test/custom-elements/samples/extended-builtin/_config.js
@@ -2,15 +2,15 @@ export default {
 	warnings: [{
 		code: "avoid-is",
 		message: "The 'is' attribute is not supported cross-browser and should be avoided",
-		pos: 97,
+		pos: 98,
 		start: {
-			character: 97,
+			character: 98,
 			column: 8,
 			line: 7
 		},
 		end: {
-			character: 114,
-			column: 25,
+			character: 116,
+			column: 26,
 			line: 7
 		}
 	}]