diff --git a/common/gitea_utils.go b/common/gitea_utils.go
index 57e8e2f..660d510 100644
--- a/common/gitea_utils.go
+++ b/common/gitea_utils.go
@@ -723,8 +723,12 @@ func (gitea *GiteaTransport) CreatePullRequestIfNotExist(repo *models.Repository
 }
 
 func (gitea *GiteaTransport) RequestReviews(pr *models.PullRequest, reviewers ...string) ([]*models.PullReview, error) {
+	activeReviewers := slices.DeleteFunc(reviewers, func(s string) bool { return s == "" })
+	if len(activeReviewers) == 0 {
+		return nil, nil
+	}
 	reviewOptions := models.PullReviewRequestOptions{
-		Reviewers: reviewers,
+		Reviewers: activeReviewers,
 	}
 
 	review, err := gitea.client.Repository.RepoCreatePullReviewRequests(
diff --git a/common/pr.go b/common/pr.go
index 164ae4a..40c2be1 100644
--- a/common/pr.go
+++ b/common/pr.go
@@ -422,21 +422,16 @@ func (rs *PRSet) AssignReviewers(gitea GiteaReviewFetcherAndRequesterAndUnreques
 		if len(missingReviewers) > 0 {
 			LogDebug("  Requesting reviews from:", missingReviewers)
 			if !IsDryRun {
-				for _, r := range missingReviewers {
-					if _, err := gitea.RequestReviews(pr.PR, r); err != nil {
-						LogError("Cannot create reviews on", PRtoString(pr.PR), "for user:", r, err)
-					}
+				if _, err := gitea.RequestReviews(pr.PR, missingReviewers...); err != nil {
+					LogError("Cannot create reviews on", PRtoString(pr.PR), "for user:", strings.Join(missingReviewers, ","), err)
 				}
 			}
 		}
 		if len(extraReviewers) > 0 {
 			LogDebug("  UnRequesting reviews from:", extraReviewers)
 			if !IsDryRun {
-				for _, r := range extraReviewers {
-					org, repo, idx := pr.PRComponents()
-					if err := gitea.UnrequestReview(org, repo, idx, r); err != nil {
-						LogError("Cannot unrequest reviews on", PRtoString(pr.PR), "for user:", r, err)
-					}
+				if err := gitea.UnrequestReview(pr.PR.Base.Repo.Owner.UserName, pr.PR.Base.Repo.Name, pr.PR.Index, extraReviewers...); err != nil {
+					LogError("Cannot unrequest reviews on", PRtoString(pr.PR), "for user:", strings.Join(extraReviewers, ","), err)
 				}
 			}
 		}