diff --git a/build/phpstan/bootstrap.php b/build/phpstan/bootstrap.php
index 7e3f586e..d6a71a14 100644
--- a/build/phpstan/bootstrap.php
+++ b/build/phpstan/bootstrap.php
@@ -1,7 +1,7 @@
 <?php declare(strict_types=1);
 
-if (!class_exists('Gnupg')) {
-    class Gnupg {
+if (!class_exists('gnupg')) {
+    class gnupg {
         public function import($p): array {
         }
 
diff --git a/src/shared/GnuPG.php b/src/shared/GnuPG.php
index e4d5a0c2..be5361da 100644
--- a/src/shared/GnuPG.php
+++ b/src/shared/GnuPG.php
@@ -14,13 +14,13 @@
 use PharIo\FileSystem\Directory;
 
 class GnuPG {
-    /** @var \GnuPG */
+    /** @var \gnupg */
     private $gnupg;
 
     /** @var Directory */
     private $homeDir;
 
-    public function __construct(\GnuPG $gnupg, Directory $homeDir) {
+    public function __construct(\gnupg $gnupg, Directory $homeDir) {
         $this->gnupg   = $gnupg;
         $this->homeDir = $homeDir;
     }
diff --git a/tests/unit/services/signature/gpg/GnupgSignatureVerifierTest.php b/tests/unit/services/signature/gpg/GnupgSignatureVerifierTest.php
index f2d890f5..79df5e1a 100644
--- a/tests/unit/services/signature/gpg/GnupgSignatureVerifierTest.php
+++ b/tests/unit/services/signature/gpg/GnupgSignatureVerifierTest.php
@@ -18,14 +18,14 @@
  * @covers \PharIo\Phive\GnupgSignatureVerifier
  */
 class GnupgSignatureVerifierTest extends TestCase {
-    /** @var \Gnupg|ObjectProphecy */
+    /** @var GnuPG|ObjectProphecy */
     private $gnupg;
 
     /** @var KeyService|ObjectProphecy */
     private $keyservice;
 
     protected function setUp(): void {
-        $this->gnupg      = $this->prophesize(Gnupg::class);
+        $this->gnupg      = $this->prophesize(GnuPG::class);
         $this->keyservice = $this->prophesize(KeyService::class);
     }