diff --git a/lib/promscrape/discovery/kubernetes/api_watcher.go b/lib/promscrape/discovery/kubernetes/api_watcher.go
index e6c56212bd..9e1c80830b 100644
--- a/lib/promscrape/discovery/kubernetes/api_watcher.go
+++ b/lib/promscrape/discovery/kubernetes/api_watcher.go
@@ -437,9 +437,7 @@ func (uw *urlWatcher) registerPendingAPIWatchers() {
 	for aw := range uw.awsPending {
 		awsPending = append(awsPending, aw)
 		delete(uw.awsPending, aw)
-		if _, ok := uw.aws[aw]; !ok {
-			uw.aws[aw] = struct{}{}
-		}
+		uw.aws[aw] = struct{}{}
 	}
 	uw.reloadScrapeWorksForAPIWatchers(awsPending, uw.objectsByKey)
 	uw.mu.Unlock()