diff --git a/test/case/infix_dhcp/dhcp_client.yaml b/test/case/infix_dhcp/dhcp_client.yaml
index 76870a5a..1b0c97ed 100644
--- a/test/case/infix_dhcp/dhcp_client.yaml
+++ b/test/case/infix_dhcp/dhcp_client.yaml
@@ -1,4 +1,7 @@
 ---
+- settings:
+    test-spec: Readme.adoc
+
 - name: client_basic
   case: client_basic/test.py
 
diff --git a/test/case/infix_dhcp/dhcp_server.yaml b/test/case/infix_dhcp/dhcp_server.yaml
index 5f87bf87..3e88b1b0 100644
--- a/test/case/infix_dhcp/dhcp_server.yaml
+++ b/test/case/infix_dhcp/dhcp_server.yaml
@@ -1,4 +1,7 @@
 ---
+- settings:
+    test-spec: Readme.adoc
+
 - name: server_basic
   case: server_basic/test.py