diff --git a/.php_cs.dist b/.php_cs.dist
index fa1e3a2c923..2fdd5c91049 100644
--- a/.php_cs.dist
+++ b/.php_cs.dist
@@ -97,6 +97,7 @@ return PhpCsFixer\Config::create()
         'native_constant_invocation' => true,
         'native_function_casing' => true,
         'native_function_invocation' => true,
+        'native_function_type_declaration_casing' => true,
         'new_with_braces' => false,
         'no_alias_functions' => true,
         'no_alternative_syntax' => true,