diff --git a/testcases/git_diff/duplicate-lines-separated.in.html b/testcases/git_diff/duplicate-lines-separated.in.html
index f4dccf2..a68a29d 100644
--- a/testcases/git_diff/duplicate-lines-separated.in.html
+++ b/testcases/git_diff/duplicate-lines-separated.in.html
@@ -1,2 +1,6 @@
 
                           <p>This is my specification and it is intended for authors of documents and scripts that use the features defined in this specification<span w-nodev>, implementers ......</span>.</p>
+
+                          <h1>My specification</h1>
+
+                          <p>This is my specification and it is intended for authors of documents and scripts that use the features defined in this specification<span w-nodev>, implementers ......</span>.</p>