diff --git a/source/wrappers/dedupsource.go b/source/wrappers/dedupsource.go
index 2d9fc6c367..1fde740988 100644
--- a/source/wrappers/dedupsource.go
+++ b/source/wrappers/dedupsource.go
@@ -40,7 +40,7 @@ func NewDedupSource(source source.Source) source.Source {
 func (ms *dedupSource) Endpoints(ctx context.Context) ([]*endpoint.Endpoint, error) {
 	log.Debug("dedupSource: collecting endpoints and removing duplicates")
 	result := make([]*endpoint.Endpoint, 0)
-	collected := map[string]bool{}
+	collected := make(map[string]struct{})
 
 	endpoints, err := ms.source.Endpoints(ctx)
 	if err != nil {
@@ -63,7 +63,7 @@ func (ms *dedupSource) Endpoints(ctx context.Context) ([]*endpoint.Endpoint, err
 			continue
 		}
 
-		collected[identifier] = true
+		collected[identifier] = struct{}{}
 		result = append(result, ep)
 	}