diff --git a/services/feed/action.go b/services/feed/action.go
index 96de080691..96ed154064 100644
--- a/services/feed/action.go
+++ b/services/feed/action.go
@@ -308,6 +308,10 @@ func (*actionNotifier) AutoMergePullRequest(ctx context.Context, doer *user_mode
 }
 
 func (*actionNotifier) PullReviewDismiss(ctx context.Context, doer *user_model.User, review *issues_model.Review, comment *issues_model.Comment) {
+	if err := review.LoadReviewer(ctx); err != nil {
+		log.Error("LoadReviewer '%d/%d': %v", review.ID, review.ReviewerID, err)
+		return
+	}
 	reviewerName := review.Reviewer.Name
 	if len(review.OriginalAuthor) > 0 {
 		reviewerName = review.OriginalAuthor