diff --git a/server/backend/sqlite/error.go b/server/backend/sqlite/error.go
index 1422697a9ba60dd105fb31af5ed2f0d68c047f04..8476f640ccd3fb0728e5521e1e2db2d1ec268ce0 100644
--- a/server/backend/sqlite/error.go
+++ b/server/backend/sqlite/error.go
@@ -14,4 +14,7 @@ var (
 
 	// ErrRepoNotExist is returned when a repository does not exist.
 	ErrRepoNotExist = fmt.Errorf("repository does not exist")
+
+	// ErrRepoExist is returned when a repository already exists.
+	ErrRepoExist = fmt.Errorf("repository already exists")
 )
diff --git a/server/backend/sqlite/sqlite.go b/server/backend/sqlite/sqlite.go
index 25d396a352f1911949db410f96182acf5351888b..d45a9f4052394438b56ac5719afb3e15c25d0eb8 100644
--- a/server/backend/sqlite/sqlite.go
+++ b/server/backend/sqlite/sqlite.go
@@ -184,6 +184,10 @@ func (d *SqliteBackend) ImportRepository(name string, remote string, opts backen
 	repo := name + ".git"
 	rp := filepath.Join(d.reposPath(), repo)
 
+	if _, err := os.Stat(rp); err == nil || os.IsExist(err) {
+		return nil, ErrRepoExist
+	}
+
 	copts := git.CloneOptions{
 		Bare:    true,
 		Mirror:  opts.Mirror,