diff --git a/src/lib/cache.js b/src/lib/cache.js
index 107fc00..2e8a9a9 100644
--- a/src/lib/cache.js
+++ b/src/lib/cache.js
@@ -1,3 +1,5 @@
+const constants = require("./constants")
+
 /**
  * @template T
  */
@@ -11,7 +13,7 @@ class TtlCache {
 		this.cache = new Map()
 		this.sweepInterval = setInterval(() => {
 			this.clean()
-		}, this.ttl)
+		}, constants.caching.cache_sweep_interval)
 	}
 
 	clean() {
diff --git a/src/lib/constants.js b/src/lib/constants.js
index 07fa04d..a540a99 100644
--- a/src/lib/constants.js
+++ b/src/lib/constants.js
@@ -38,6 +38,7 @@ let constants = {
 		resource_cache_time: 30*60*1000,
 		instance_list_cache_time: 3*60*1000,
 		updater_cache_time: 2*60*1000,
+		cache_sweep_interval: 3*60*1000,
 		db_user_id: true,
 		db_post_n3: true
 	},