diff --git a/README.md b/README.md
index 89d55fa..f9046f7 100644
--- a/README.md
+++ b/README.md
@@ -106,6 +106,8 @@ echo Number::fromRoman("CXXV"); // 125
 
 **Binary Suffix**
 
+Convert a number of bytes in to the highest applicable data unit
+
 ```php
 use Coduo\PHPHumanizer\Number;
 
@@ -128,13 +130,22 @@ use Coduo\PHPHumanizer\Number;
 echo Number::binarySuffix(1536, 'pl'); // "1,5 kB"
 ```
 
-Number can also be humanized with a specific number of decimal places by providing a precision parameter (between 0 and 3)
+Number can also be humanized with a specific number of decimal places with ```preciseBinarySuffix($number, $precision, $locale = 'en')```
+The precision parameter must be between 0 and 3.
+
+```php
+use Coduo\PHPHumanizer\Number;
+
+echo Number::preciseBinarySuffix(1024, 2); // "1.00 kB"
+echo Number::binarySuffix(1325899906842624, 3); // "1.178 PB"
+```
+
+This function also supports locale
 
 ```php
 use Coduo\PHPHumanizer\Number;
 
-echo Number::binarySuffix(1024, 'en', 3); // "1.000 kB"
-echo Number::binarySuffix(1325899906842624, 'en', 3); // "1.178 PB"
+echo Number::binarySuffix(1325899906842624, 3, 'pl); // "1,178 PB"
 ```
 
 **Metric Suffix**
diff --git a/src/Coduo/PHPHumanizer/Number.php b/src/Coduo/PHPHumanizer/Number.php
index f6877da..89caf87 100644
--- a/src/Coduo/PHPHumanizer/Number.php
+++ b/src/Coduo/PHPHumanizer/Number.php
@@ -19,7 +19,14 @@ public static function ordinal($number)
         return (string) new Ordinal($number);
     }
 
-    public static function binarySuffix($number, $locale = 'en', $precision = null)
+    public static function binarySuffix($number, $locale = 'en')
+    {
+        $binarySuffix = new BinarySuffix($number, $locale);
+
+        return $binarySuffix->convert();
+    }
+
+    public static function preciseBinarySuffix($number, $precision, $locale = 'en')
     {
         $binarySuffix = new BinarySuffix($number, $locale, $precision);
 
diff --git a/tests/Coduo/PHPHumanizer/Tests/NumberTest.php b/tests/Coduo/PHPHumanizer/Tests/NumberTest.php
index 38c178f..c2ef873 100644
--- a/tests/Coduo/PHPHumanizer/Tests/NumberTest.php
+++ b/tests/Coduo/PHPHumanizer/Tests/NumberTest.php
@@ -42,16 +42,16 @@ public function test_convert_number_to_string_with_binary_suffix($expected, $num
     }
 
     /**
-     * @dataProvider binarySuffixWithPrecisionDataProvider
+     * @dataProvider preciseBinarySuffixDataProvider
      *
      * @param         $expected
      * @param         $number
      * @param string  $locale
      * @param integer $precision
      */
-    public function test_convert_number_to_string_with_binary_suffix_precision($expected, $number, $locale = 'en', $precision)
+    public function test_convert_number_to_string_with_precise_binary_suffix($expected, $number, $precision, $locale = 'en')
     {
-        $this->assertEquals($expected, Number::binarySuffix($number, $locale, $precision));
+        $this->assertEquals($expected, Number::preciseBinarySuffix($number, $precision, $locale));
     }
 
     /**
@@ -179,22 +179,22 @@ public function binarySuffixDataProvider()
     /**
      * @return array
      */
-    public function binarySuffixWithPrecisionDataProvider()
+    public function preciseBinarySuffixDataProvider()
     {
         return array(
-            array(-1, -1, 'en', 3),
-            array("0 bytes", 0, 'en', 3),
-            array("1 bytes", 1, 'en', 3),
-            array("1.000 kB", 1024, 'en', 3),
-            array("1.001 kB", 1025, 'en', 3),
-            array("1.500 kB", 1536, 'en', 3),
-            array("5.000 MB", 1048576 * 5, 'en', 3),
-            array("2.000 GB", 1073741824 * 2, 'en', 3),
-            array("3.000 TB", 1099511627776 * 3, 'en', 3),
-            array("1.178 PB", 1325899906842624, 'en', 3),
+            array(-1, -1, 3),
+            array("0 bytes", 0, 3),
+            array("1 bytes", 1, 3),
+            array("1.000 kB", 1024, 3),
+            array("1.001 kB", 1025, 3),
+            array("1.500 kB", 1536, 3),
+            array("5.000 MB", 1048576 * 5, 3),
+            array("2.000 GB", 1073741824 * 2, 3),
+            array("3.000 TB", 1099511627776 * 3, 3),
+            array("1.178 PB", 1325899906842624, 3),
 
-            array("1,500 kB", 1536, 'pl', 3),
-            array("1,178 PB", 1325899906842624, 'pl', 3),
+            array("1,500 kB", 1536, 3, 'pl'),
+            array("1,178 PB", 1325899906842624, 3, 'pl'),
         );
     }