diff --git a/.DS_Store b/.DS_Store
index ed0c180..0be8f8a 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/src/NotaFiscal.php b/src/NotaFiscal.php
index 0a815aa..5f6fca1 100644
--- a/src/NotaFiscal.php
+++ b/src/NotaFiscal.php
@@ -41,7 +41,7 @@ public function ListMunicipalServices($parametos){
     }
 
     public function issueInvoice($id){
-        return $this->http->post('/invoices/'$id.'/authorize', arrat());
+        return $this->http->post('/invoices/'.$id.'/authorize', arrat());
     }
 
     public function create($id){