diff --git a/tests/pillar/cluster.sls b/tests/pillar/cluster.sls
index 7d89d10..f3685e2 100644
--- a/tests/pillar/cluster.sls
+++ b/tests/pillar/cluster.sls
@@ -121,6 +121,7 @@
       id: 2
     - host: 127.0.0.1
       id: 3
+    concurrent_compactors: 1
   web:
     version: 3.0
     enabled: True