diff --git a/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php b/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
index 1cf8ee126f..6d256ff2ea 100644
--- a/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
+++ b/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
@@ -304,7 +304,7 @@ class XmlEncoder extends SerializerAwareEncoder implements EncoderInterface, Dec
         $typeCastAttributes = $this->resolveXmlTypeCastAttributes($context);
 
         foreach ($node->attributes as $attr) {
-            if (!is_numeric($attr->nodeValue) || !$typeCastAttributes || (isset($attr->nodeValue[1]) && '0' === $attr->nodeValue[0])) {
+            if (!is_numeric($attr->nodeValue) || !$typeCastAttributes || (isset($attr->nodeValue[1]) && '0' === $attr->nodeValue[0] && '.' !== $attr->nodeValue[1])) {
                 $data['@'.$attr->nodeName] = $attr->nodeValue;
 
                 continue;
diff --git a/src/Symfony/Component/Serializer/Tests/Encoder/XmlEncoderTest.php b/src/Symfony/Component/Serializer/Tests/Encoder/XmlEncoderTest.php
index 94f2e6c18a..c9b2de2e83 100644
--- a/src/Symfony/Component/Serializer/Tests/Encoder/XmlEncoderTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Encoder/XmlEncoderTest.php
@@ -268,10 +268,10 @@ XML;
     {
         $source = <<<XML
 <?xml version="1.0"?>
-<document index="-12.11">Name</document>
+<document index="12.11">Name</document>
 XML;
 
-        $this->assertSame(['@index' => -12.11, '#' => 'Name'], $this->encoder->decode($source, 'xml'));
+        $this->assertSame(['@index' => 12.11, '#' => 'Name'], $this->encoder->decode($source, 'xml'));
     }
 
     public function testDecodeNegativeFloatAttribute()
@@ -284,6 +284,16 @@ XML;
         $this->assertSame(['@index' => -12.11, '#' => 'Name'], $this->encoder->decode($source, 'xml'));
     }
 
+    public function testDecodeFloatAttributeWithZeroWholeNumber()
+    {
+        $source = <<<XML
+<?xml version="1.0"?>
+<document index="0.123">Name</document>
+XML;
+
+        $this->assertSame(['@index' => 0.123, '#' => 'Name'], $this->encoder->decode($source, 'xml'));
+    }
+
     public function testNoTypeCastAttribute()
     {
         $source = <<<XML