diff --git a/infrastructure/sqlite/namespace/repository.go b/infrastructure/sqlite/namespace/repository.go
index 84af638..5926b97 100644
--- a/infrastructure/sqlite/namespace/repository.go
+++ b/infrastructure/sqlite/namespace/repository.go
@@ -139,7 +139,7 @@ func (r *Repository) GetByName(name string) (*namespace.Namespace, error) {
 	row, err := q.GetNamespaceByName(ctx, name)
 
 	if err != nil {
-		return nil, err
+		return nil, namespace.ErrNotExists
 	}
 
 	ns := namespace.Namespace{