diff --git a/test/FilterTest.php b/test/FilterTest.php
index 9b82ae7..5b149ad 100644
--- a/test/FilterTest.php
+++ b/test/FilterTest.php
@@ -10,8 +10,8 @@ public function tearDown(): void
 
   public function testApprove()
   {
-    $auth = new Castle_Filter();
-    $auth->save();
+    $filter = new Castle_Filter();
+    $filter->save();
     $this->assertRequest('post', '/filter');
   }
 }
diff --git a/test/LogTest.php b/test/LogTest.php
index bc7d74a..bfd9d40 100644
--- a/test/LogTest.php
+++ b/test/LogTest.php
@@ -10,8 +10,8 @@ public function tearDown(): void
 
   public function testApprove()
   {
-    $auth = new Castle_Log();
-    $auth->save();
+    $log = new Castle_Log();
+    $log->save();
     $this->assertRequest('post', 'log');
   }
 }
diff --git a/test/RiskTest.php b/test/RiskTest.php
index e11ea2f..a0829b8 100644
--- a/test/RiskTest.php
+++ b/test/RiskTest.php
@@ -10,8 +10,8 @@ public function tearDown(): void
 
   public function testApprove()
   {
-    $auth = new Castle_Risk();
-    $auth->save();
+    $risk = new Castle_Risk();
+    $risk->save();
     $this->assertRequest('post', '/risk');
   }
 }