diff --git a/include/GeraNumero.php b/include/GeraNumero.php
index 15637d2..24ca988 100644
--- a/include/GeraNumero.php
+++ b/include/GeraNumero.php
@@ -35,10 +35,10 @@ public function __construct()
      */
     private function __gerarNumero()
     {
-        $numero = rand($this->min, $this->max);
+        $numero = mt_rand($this->min, $this->max);
         if ( !empty($this->numeros) && count($this->numeros) < $this->max ) {
             while(in_array($numero, $this->numeros)) {
-                $numero = rand($this->min, $this->max);
+                $numero = mt_rand($this->min, $this->max);
             }
         } else {
             if ( count($this->numeros) >= $this->max ) {
@@ -52,4 +52,4 @@ private function __gerarNumero()
     
 }
 
-new GeraNumero();
\ No newline at end of file
+new GeraNumero();