diff --git a/Tests/Hasher/NativePasswordHasherTest.php b/Tests/Hasher/NativePasswordHasherTest.php
index 9895910..324e1dc 100644
--- a/Tests/Hasher/NativePasswordHasherTest.php
+++ b/Tests/Hasher/NativePasswordHasherTest.php
@@ -128,7 +128,7 @@ public function testBcryptWithNulByteWithNativePasswordHash()
             $this->markTestSkipped('password_hash() does not accept passwords containing NUL bytes.');
         }
 
-        $this->assertTrue($hasher->verify($hash, $plainPassword));
+        $this->assertFalse($hasher->verify($hash, $plainPassword));
     }
 
     public function testPasswordNulByteGracefullyHandled()
diff --git a/Tests/Hasher/SodiumPasswordHasherTest.php b/Tests/Hasher/SodiumPasswordHasherTest.php
index 2931635..ed04b5e 100644
--- a/Tests/Hasher/SodiumPasswordHasherTest.php
+++ b/Tests/Hasher/SodiumPasswordHasherTest.php
@@ -103,7 +103,7 @@ public function testBcryptWithNulByteWithNativePasswordHash()
             $this->markTestSkipped('password_hash() does not accept passwords containing NUL bytes.');
         }
 
-        $this->assertTrue($hasher->verify($hash, $plainPassword));
+        $this->assertFalse($hasher->verify($hash, $plainPassword));
     }
 
     public function testPasswordNulByteGracefullyHandled()