diff --git a/services/pull/merge.go b/services/pull/merge.go
index 9ef3fb2e0593a..e19292c31ca99 100644
--- a/services/pull/merge.go
+++ b/services/pull/merge.go
@@ -23,6 +23,7 @@ import (
 	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/cache"
 	"code.gitea.io/gitea/modules/git"
+	"code.gitea.io/gitea/modules/httplib"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/references"
 	repo_module "code.gitea.io/gitea/modules/repository"
@@ -56,7 +57,7 @@ func getMergeMessage(ctx context.Context, baseGitRepo *git.Repository, pr *issue
 		issueReference = "!"
 	}
 
-	reviewedOn := fmt.Sprintf("Reviewed-on: %s/%s", setting.AppURL, pr.Issue.Link())
+	reviewedOn := fmt.Sprintf("Reviewed-on: %s", httplib.MakeAbsoluteURL(ctx, pr.Issue.Link()))
 	reviewedBy := pr.GetApprovers(ctx)
 
 	if mergeStyle != "" {