diff --git a/config/stress.json b/config/stress.json
index 1019e205306d6e8eb43f88d75050fdfaaf3bced8..181de977f56660ea1cd120b9eccc317df7d7c0f7 100644
--- a/config/stress.json
+++ b/config/stress.json
@@ -12,7 +12,7 @@
             "request-header": {},
             "display-name": "dummy",
             "engine-boost": 1,
-            "cache-duration": -1,
+            "cache-duration": 0,
             "disabled": false,
             "filter-opt-in": false,
             "homepage": "https:\/\/gitlab.metager.de\/open-source\/dummy-engine"