diff --git a/src/Console/ConfigurationResolver.php b/src/Console/ConfigurationResolver.php
index faeeb6b73b8..2fd16d9dfb9 100644
--- a/src/Console/ConfigurationResolver.php
+++ b/src/Console/ConfigurationResolver.php
@@ -235,13 +235,7 @@ public function getConfig()
 
                 if (isset($deprecatedConfigs[$configFileBasename])) {
                     $message = "Configuration file `{$configFileBasename}` is deprecated, rename to `{$deprecatedConfigs[$configFileBasename]}`.";
-
-                    // TODO 3.0: always throw exception
-                    if (getenv('PHP_CS_FIXER_FUTURE_MODE')) {
-                        throw new InvalidConfigurationException("{$message} This check was performed as `PHP_CS_FIXER_FUTURE_MODE` env var is set.");
-                    }
-
-                    @trigger_error($message, E_USER_DEPRECATED);
+                    Utils::triggerDeprecation($message, InvalidConfigurationException::class);
                 }
 
                 $config = self::separatedContextLessInclude($configFile);