diff --git a/ietf/idindex/testurl.list b/ietf/idindex/testurl.list
index fe2b02b82..e6c0354bb 100644
--- a/ietf/idindex/testurl.list
+++ b/ietf/idindex/testurl.list
@@ -10,5 +10,5 @@ skipredirect,200	/idindex/draft-ietf-dnsext-dnssec-protocol/view_related_docs/	h
 skipredirect,200	/idindex/draft-ietf-dnsext-dnssec-protocol/	https://datatracker.ietf.org/public/idindex.cgi?command=id_detail&id=9574
 200	/idindex/all_id_txt.html
 200	/idindex/all_id.html
-200	/idindex/			https://datatracker.ietf.org/public/idindex.cgi?command=search_id
+200	/idindex/?			https://datatracker.ietf.org/public/idindex.cgi?command=search_id
 200	/idindex/			https://datatracker.ietf.org/public/idindex.cgi
diff --git a/test/diff/_idindex__ b/test/diff/_idindex__
new file mode 100644
index 000000000..7d3a761c7
--- /dev/null
+++ b/test/diff/_idindex__
@@ -0,0 +1,12 @@
+--- https://datatracker.ietf.org/public/idindex.cgi?command=search_id 
++++ /idindex/?
+@@ -16,1 +16,0 @@
+-I-D Exists
+@@ -545,2 +544,2 @@
+-RFC EDITOR
+-TOOLS
++RFC Editor
++Tools
+@@ -555,1 +554,1 @@
+-Author: Last Name First Name
++Author: Last name First name
\ No newline at end of file