diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index 5e8b43d..326062f 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -67,7 +67,7 @@ public function getConfigTreeBuilder()
                         ->end()
                         ->scalarNode('max_size')
                             ->defaultValue(\PHP_INT_MAX)
-                            ->info('Set max_size to -1 for gracefully downgrade this number to the systems max upload size.')
+                            ->info('Maximum file size in bytes. Set max_size to -1 for gracefully downgrade this number to the systems max upload size.')
                         ->end()
                         ->scalarNode('max_files')
                             ->defaultValue(\PHP_INT_MAX)
@@ -94,7 +94,7 @@ public function getConfigTreeBuilder()
                                 ->prototype('scalar')->end()
                             ->end()
                             ->scalarNode('max_size')
-                                ->info('Set max_size to -1 for gracefully downgrade this number to the systems max upload size.')
+                                ->info('Maximum file size in bytes. Set max_size to -1 for gracefully downgrade this number to the systems max upload size.')
                             ->end()
                             ->scalarNode('max_files')
                                 ->info('Set max files.')
diff --git a/EventListener/MaxSizeValidationListener.php b/EventListener/MaxSizeValidationListener.php
index baca1fa..6206183 100644
--- a/EventListener/MaxSizeValidationListener.php
+++ b/EventListener/MaxSizeValidationListener.php
@@ -30,10 +30,9 @@ public function onValidate(ValidationEvent $event)
         $config = $event->getConfig();
         $file   = $event->getFile();
 
-        if ($file->getSize() > $config['max_size'] * (1024 * 1024)) {
-            $fileSizeInMegaBytes = round($file->getSize() / (1024 * 1024));
+        if ($file->getSize() > $config['max_size']) {
             throw new ValidationException(
-                'error.maxsize', ['filesize' => $fileSizeInMegaBytes, 'maxFilesize' => $config['max_size']]
+                'error.maxsize', ['filesize' => $file->getSize(), 'maxFilesize' => $config['max_size']]
             );
         }
     }
diff --git a/Resources/translations/messages+intl-icu.en.yml b/Resources/translations/messages+intl-icu.en.yml
index 50f4451..10e2244 100644
--- a/Resources/translations/messages+intl-icu.en.yml
+++ b/Resources/translations/messages+intl-icu.en.yml
@@ -1,3 +1,3 @@
 error:
     invalid_type: You can't upload files of this type
-    maxsize: 'File is too big ({filesize} MB). Max filesize: {maxFilesize} MB'
\ No newline at end of file
+    maxsize: 'File is too big ({filesize} bites). Max filesize: {maxFilesize} bites'
\ No newline at end of file
diff --git a/Resources/translations/messages+intl-icu.ru.yml b/Resources/translations/messages+intl-icu.ru.yml
index c6a16bc..515d829 100644
--- a/Resources/translations/messages+intl-icu.ru.yml
+++ b/Resources/translations/messages+intl-icu.ru.yml
@@ -1,3 +1,3 @@
 error:
     invalid_type: Неверный формат файла
-    maxsize: Файл слишком большой ({filesize} MB). Максимальный допустимый размер файла {maxFilesize} MB
\ No newline at end of file
+    maxsize: Файл слишком большой ({filesize} байт). Максимальный допустимый размер файла {maxFilesize} байт
\ No newline at end of file