diff --git a/Curl.class.php b/Curl.class.php
index a35cc1e..e71d1b5 100644
--- a/Curl.class.php
+++ b/Curl.class.php
@@ -87,7 +87,7 @@ class Curl {
         $is_array_assoc = is_array_assoc($data);
 
         foreach ($data as $k => $value) {
-            if (is_string($value) || is_int($value)) {
+            if (is_string($value) || is_numeric($value)) {
                 $brackets = $is_array_assoc ? '[' . $k . ']' : '[]';
                 $query[] = urlencode(is_null($key) ? $k : $key . $brackets) . '=' . rawurlencode($value);
             }
diff --git a/tests/run.php b/tests/run.php
index 320d395..ce9b506 100644
--- a/tests/run.php
+++ b/tests/run.php
@@ -68,9 +68,10 @@ class CurlTest extends PHPUnit_Framework_TestCase {
             'more_data' => array(
                 'param1' => 'something',
                 'param2' => 'other thing',
-                'param3' => '123',
+                'param3' => 123,
+                'param4' => 3.14,
             ),
-        )) === 'test=post_multidimensional&username=myusername&password=mypassword&more_data%5Bparam1%5D=something&more_data%5Bparam2%5D=other%20thing&more_data%5Bparam3%5D=123');
+        )) === 'test=post_multidimensional&username=myusername&password=mypassword&more_data%5Bparam1%5D=something&more_data%5Bparam2%5D=other%20thing&more_data%5Bparam3%5D=123&more_data%5Bparam4%5D=3.14');
     }
 
     public function testPostMultidimensionalData() {