diff --git a/tests/UuidTest.php b/tests/UuidTest.php
index 95259c2..144f0a8 100644
--- a/tests/UuidTest.php
+++ b/tests/UuidTest.php
@@ -1975,7 +1975,7 @@ class UuidTest extends TestCase
     public function testUuidVersionConstantForVersion1()
     {
         $uuid = Uuid::fromString('ff6f8cb0-c57d-11e1-9b21-0800200c9a66');
-        $this->assertEquals($uuid->getVersion(), UUID::UUID_TYPE_TIME);
+        $this->assertEquals($uuid->getVersion(), Uuid::UUID_TYPE_TIME);
     }
 
     /**
@@ -1984,7 +1984,7 @@ class UuidTest extends TestCase
     public function testUuidVersionConstantForVersion2()
     {
         $uuid = Uuid::fromString('6fa459ea-ee8a-2ca4-894e-db77e160355e');
-        $this->assertEquals($uuid->getVersion(), UUID::UUID_TYPE_IDENTIFIER);
+        $this->assertEquals($uuid->getVersion(), Uuid::UUID_TYPE_IDENTIFIER);
     }
 
     /**
@@ -1993,7 +1993,7 @@ class UuidTest extends TestCase
     public function testUuidVersionConstantForVersion3()
     {
         $uuid = Uuid::fromString('6fa459ea-ee8a-3ca4-894e-db77e160355e');
-        $this->assertEquals($uuid->getVersion(), UUID::UUID_TYPE_HASH_MD5);
+        $this->assertEquals($uuid->getVersion(), Uuid::UUID_TYPE_HASH_MD5);
     }
 
     /**
@@ -2002,7 +2002,7 @@ class UuidTest extends TestCase
     public function testUuidVersionConstantForVersion4()
     {
         $uuid = Uuid::fromString('6fabf0bc-603a-42f2-925b-d9f779bd0032');
-        $this->assertEquals($uuid->getVersion(), UUID::UUID_TYPE_RANDOM);
+        $this->assertEquals($uuid->getVersion(), Uuid::UUID_TYPE_RANDOM);
     }
 
     /**
@@ -2011,6 +2011,6 @@ class UuidTest extends TestCase
     public function testUuidVersionConstantForVersion5()
     {
         $uuid = Uuid::fromString('886313e1-3b8a-5372-9b90-0c9aee199e5d');
-        $this->assertEquals($uuid->getVersion(), UUID::UUID_TYPE_HASH_SHA1);
+        $this->assertEquals($uuid->getVersion(), Uuid::UUID_TYPE_HASH_SHA1);
     }
 }