diff --git a/lib/cache/sqlite-cache-store.js b/lib/cache/sqlite-cache-store.js
index 608c5f82225..e2fbc6718ab 100644
--- a/lib/cache/sqlite-cache-store.js
+++ b/lib/cache/sqlite-cache-store.js
@@ -350,7 +350,7 @@ module.exports = class SqliteCacheStore {
   }
 
   #prune () {
-    if (this.size <= this.#maxCount) {
+    if (Number.isFinite(this.#maxCount) && this.size <= this.#maxCount) {
       return 0
     }