diff --git a/src/Symfony/Component/VarDumper/Dumper/AbstractDumper.php b/src/Symfony/Component/VarDumper/Dumper/AbstractDumper.php
index b266258623..0f42d8a6c4 100644
--- a/src/Symfony/Component/VarDumper/Dumper/AbstractDumper.php
+++ b/src/Symfony/Component/VarDumper/Dumper/AbstractDumper.php
@@ -123,6 +123,10 @@ abstract class AbstractDumper implements DataDumperInterface, DumperInterface
      */
     public function dump(Data $data, $output = null)
     {
+        if ($locale = $this->flags & (self::DUMP_COMMA_SEPARATOR | self::DUMP_TRAILING_COMMA) ? setlocale(LC_NUMERIC, 0) : null) {
+            setlocale(LC_NUMERIC, 'C');
+        }
+
         if ($returnDump = true === $output) {
             $output = fopen('php://memory', 'r+b');
         }
@@ -143,6 +147,9 @@ abstract class AbstractDumper implements DataDumperInterface, DumperInterface
             if ($output) {
                 $this->setOutput($prevOutput);
             }
+            if ($locale) {
+                setlocale(LC_NUMERIC, $locale);
+            }
         }
     }