diff --git a/html5lib/tests/expected-failures/tokenizer.dat b/html5lib/tests/expected-failures/tokenizer.dat
new file mode 100644
index 00000000..e4fd1b03
--- /dev/null
+++ b/html5lib/tests/expected-failures/tokenizer.dat
@@ -0,0 +1,40 @@
+#data
+
+
+#data
+
+
+#data
+a