diff --git a/html/token.go b/html/token.go
index 3c17c7e..a226099 100644
--- a/html/token.go
+++ b/html/token.go
@@ -1002,6 +1002,8 @@
 			// "<!DOCTYPE declarations>" and "<?xml processing instructions?>".
 			tokenType = CommentToken
 		default:
+			// Reconsume the current character.
+			z.raw.end--
 			continue
 		}
 
diff --git a/html/token_test.go b/html/token_test.go
index 38d80d7..f6988a8 100644
--- a/html/token_test.go
+++ b/html/token_test.go
@@ -105,6 +105,11 @@
 		"if x<0 and y < 0 then x*y>0",
 		"if x&lt;0 and y &lt; 0 then x*y&gt;0",
 	},
+	{
+		"not a tag #11",
+		"<<p>",
+		"&lt;$<p>",
+	},
 	// EOF in a tag name.
 	{
 		"tag name eof #0",