diff --git a/tokenizer/test3.test b/tokenizer/test3.test
index 86ed0c8a..27b124e0 100644
--- a/tokenizer/test3.test
+++ b/tokenizer/test3.test
@@ -4985,7 +4985,10 @@
 
 {"description":"<a\\u0000>",
 "input":"<a\u0000>",
-"output":["ParseError", ["StartTag", "a\uFFFD", {}]]},
+"output":["ParseError", ["StartTag", "a\uFFFD", {}]],
+"errors":[
+    { "code": "unexpected-null-character", "line": 1, "col": 3 }
+]},
 
 {"description":"<a\\u0008>",
 "input":"<a\u0008>",
diff --git a/tokenizer/test4.test b/tokenizer/test4.test
index 7fc7f45c..54aec7b7 100644
--- a/tokenizer/test4.test
+++ b/tokenizer/test4.test
@@ -331,11 +331,10 @@
 
 {"description":"EOF in tag name state ",
 "input":"<a",
-"output":["ParseError"]},
-
-{"description":"EOF in tag name state",
-"input":"<a",
-"output":["ParseError"]},
+"output":["ParseError"],
+"errors": [
+    { "code": "eof-in-tag-name", "line": 1, "col": 3 }
+]},
 
 {"description":"EOF in before attribute name state",
 "input":"<a ",
diff --git a/tree-construction/webkit01.dat b/tree-construction/webkit01.dat
index 94b23cc3..3fe0f406 100644
--- a/tree-construction/webkit01.dat
+++ b/tree-construction/webkit01.dat
@@ -34,6 +34,8 @@ Test
 #errors
 (1,3): eof-in-tag-name
 (1,3): expected-doctype-but-got-eof
+#new-errors
+(1:4) eof-in-tag-name
 #document
 | <html>
 |   <head>
