diff --git a/models/repo.go b/models/repo.go
index c79c52d68..e50743109 100644
--- a/models/repo.go
+++ b/models/repo.go
@@ -281,6 +281,7 @@ func (repo *Repository) APIFormat(mode AccessMode) *api.Repository {
 		Description:   repo.Description,
 		Private:       repo.IsPrivate,
 		Fork:          repo.IsFork,
+		Mirror:        repo.IsMirror,
 		HTMLURL:       repo.HTMLURL(),
 		SSHURL:        cloneLink.SSH,
 		CloneURL:      cloneLink.HTTPS,