diff --git a/cli/flushdns.php b/cli/flushdns.php
index 6826897..dd0ad35 100644
--- a/cli/flushdns.php
+++ b/cli/flushdns.php
@@ -1,16 +1,18 @@
 #!/usr/bin/env php
 <?php
 
+use Composer\InstalledVersions;
 use KnotsPHP\FlushDNS\FlushDNS;
+use NunoMaduro\Collision\Provider;
 
 error_reporting(E_ALL ^ E_DEPRECATED ^ E_NOTICE);
 
-if (! class_exists('\Composer\InstalledVersions')) {
+if (! class_exists(InstalledVersions::class)) {
     require __DIR__.'/../vendor/autoload.php';
 }
 
-if (class_exists('\NunoMaduro\Collision\Provider')) {
-    (new \NunoMaduro\Collision\Provider)->register();
+if (class_exists(Provider::class)) {
+    (new Provider)->register();
 }
 
 $ipVersion = null;
diff --git a/tests/Unit/ArchTest.php b/tests/Unit/ArchTest.php
index 40d2966..2659771 100644
--- a/tests/Unit/ArchTest.php
+++ b/tests/Unit/ArchTest.php
@@ -1,5 +1,7 @@
 <?php
 
+use KnotsPHP\FlushDNS\Exceptions\Exception;
+
 arch('enums')
     ->expect('KnotsPHP\FlushDNS\Enums')
     ->toBeEnums();
@@ -14,7 +16,7 @@
 
 arch('exceptions')
     ->expect('KnotsPHP\FlushDNS\Exceptions')
-    ->toExtend(\KnotsPHP\FlushDNS\Exceptions\Exception::class)
-    ->ignoring(\KnotsPHP\FlushDNS\Exceptions\Exception::class);
+    ->toExtend(Exception::class)
+    ->ignoring(Exception::class);
 
 arch('debug')->preset()->php();