diff --git a/src/browser/cdp.ts b/src/browser/cdp.ts
index 94e23a77..9770ca8c 100644
--- a/src/browser/cdp.ts
+++ b/src/browser/cdp.ts
@@ -274,6 +274,7 @@ function scoreCDPTarget(target: CDPTarget, preferredPattern?: RegExp): number {
 
   if (!haystack.trim() && !type) return Number.NEGATIVE_INFINITY;
   if (haystack.includes('devtools')) return Number.NEGATIVE_INFINITY;
+  if (type === 'background_page' || type === 'service_worker') return Number.NEGATIVE_INFINITY;
 
   let score = 0;