diff --git a/lib/web.ts b/lib/web.ts
index ae3cd7ea..47ba9ac8 100644
--- a/lib/web.ts
+++ b/lib/web.ts
@@ -545,7 +545,7 @@ export default class AutoConsent {
     }
 
     filterListFallback() {
-        if (!BUNDLE_FILTERLIST) {
+        if (!BUNDLE_FILTERLIST || !this.filtersEngine) {
             this.updateState({ lifecycle: 'nothingDetected' });
             return false;
         }