diff --git a/.kitchen.yml b/.kitchen.yml
index 20f4fff..8518d18 100644
--- a/.kitchen.yml
+++ b/.kitchen.yml
@@ -128,6 +128,11 @@
       pillars-from-files:
         salt.sls: tests/pillar/master_single_extreclass.sls
 
+  - name: master-backward-compat
+    provisioner:
+      pillars-from-files:
+        salt.sls: tests/pillar/master_single_extolddays.sls
+
   - name: control-default
     provisioner:
       grains: