diff --git a/internal/api/controller/pullreq/reviewer_delete.go b/internal/api/controller/pullreq/reviewer_delete.go
index f7002a640..2d85f8c31 100644
--- a/internal/api/controller/pullreq/reviewer_delete.go
+++ b/internal/api/controller/pullreq/reviewer_delete.go
@@ -14,13 +14,16 @@ import (
 
 // ReviewerDelete deletes reviewer from the reviewerlist for the given PR.
 func (c *Controller) ReviewerDelete(ctx context.Context, session *auth.Session,
-	repoRef string, prID, reviewerID int64) error {
-	_, err := c.getRepoCheckAccess(ctx, session, repoRef, enum.PermissionRepoEdit)
+	repoRef string, prNum, reviewerID int64) error {
+
+	repo, err := c.getRepoCheckAccess(ctx, session, repoRef, enum.PermissionRepoEdit)
 	if err != nil {
 		return fmt.Errorf("failed to acquire access to repo: %w", err)
 	}
 
-	err = c.reviewerStore.Delete(ctx, prID, reviewerID)
+	pr, err := c.pullreqStore.FindByNumber(ctx, repo.ID, prNum)
+
+	err = c.reviewerStore.Delete(ctx, pr.ID, reviewerID)
 	if err != nil {
 		return fmt.Errorf("failed to delete reviewer: %w", err)
 	}
diff --git a/internal/api/handler/pullreq/reviewer_delete.go b/internal/api/handler/pullreq/reviewer_delete.go
index 4a2c23ffd..c9cfcb2e6 100644
--- a/internal/api/handler/pullreq/reviewer_delete.go
+++ b/internal/api/handler/pullreq/reviewer_delete.go
@@ -24,7 +24,7 @@ func HandleReviewerDelete(pullreqCtrl *pullreq.Controller) http.HandlerFunc {
 			return
 		}
 
-		prID, err := request.GetPullReqNumberFromPath(r)
+		prNum, err := request.GetPullReqNumberFromPath(r)
 		if err != nil {
 			render.TranslatedUserError(w, err)
 			return
@@ -36,7 +36,7 @@ func HandleReviewerDelete(pullreqCtrl *pullreq.Controller) http.HandlerFunc {
 			return
 		}
 
-		err = pullreqCtrl.ReviewerDelete(ctx, session, repoRef, prID, reviewerID)
+		err = pullreqCtrl.ReviewerDelete(ctx, session, repoRef, prNum, reviewerID)
 		if err != nil {
 			render.TranslatedUserError(w, err)
 			return