diff --git a/config/systemd-monitor.json b/config/systemd-monitor.json
index 4db8cf90..c91d7dfa 100644
--- a/config/systemd-monitor.json
+++ b/config/systemd-monitor.json
@@ -4,7 +4,7 @@
 		"source": "systemd"
 	},
 	"logPath": "/var/log/journal",
-	"lookback": "",
+	"lookback": "5m",
 	"bufferSize": 10,
 	"source": "systemd-monitor",
 	"metricsReporting": true,