diff --git a/src/Rut.php b/src/Rut.php
index ce366ff..1e5918b 100644
--- a/src/Rut.php
+++ b/src/Rut.php
@@ -141,7 +141,7 @@ public function number($number = null)
     {
         if ($number !== null)
         {
-            $this->number = intval($this->escape($number));
+            $this->number = $this->escape($number);
             return $this;
         }
         return $this->number;
diff --git a/tests/unit/RutTest.php b/tests/unit/RutTest.php
index cbeb660..db2f927 100644
--- a/tests/unit/RutTest.php
+++ b/tests/unit/RutTest.php
@@ -17,7 +17,7 @@ public function testValidation()
     {
         $this->ruts = [
             'valid'    => ['11.111.111-1','111111111','11111112-K','11111112-k'],
-            'invalid'  => ['11111112-9','1234k678-3','123-1','123.456.789-2','11.111.111-L']
+            'invalid'  => ['11111112-9','17601065fail-7','123-1','123.456.789-2','11.111.111-L']
         ];
 
         /***********************