diff --git a/src/Symfony/Component/Intl/Locale.php b/src/Symfony/Component/Intl/Locale.php
index 9f810235e6f85..f9b3dfb07303a 100644
--- a/src/Symfony/Component/Intl/Locale.php
+++ b/src/Symfony/Component/Intl/Locale.php
@@ -83,6 +83,10 @@ public static function getFallback($locale)
return null;
}
+ if (0 === \count($localSubTags)) {
+ return null;
+ }
+
array_pop($localeSubTags);
$fallback = locale_compose($localeSubTags);
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