diff --git a/src/Model/Behavior/ObfuscateBehavior.php b/src/Model/Behavior/ObfuscateBehavior.php
index e7be2d4..9a3ba3a 100644
--- a/src/Model/Behavior/ObfuscateBehavior.php
+++ b/src/Model/Behavior/ObfuscateBehavior.php
@@ -91,8 +91,9 @@ public function beforeFind(Event $event, Query $query, ArrayObject $options, $pr
         }
 
         $query->traverseExpressions(function ($expression) {
+            $pk = $this->_table->primaryKey();
             if (method_exists($expression, 'getField')
-                && $expression->getField() === $this->_table->primaryKey()
+                && in_array($expression->getField(), [$pk, $this->_table->aliasField($pk)])
             ) {
                 $expression->setValue($this->elucidate($expression->getValue()));
             }
diff --git a/tests/TestCase/Model/Behavior/ObfuscateBehaviorTest.php b/tests/TestCase/Model/Behavior/ObfuscateBehaviorTest.php
index c1b96d0..d369350 100644
--- a/tests/TestCase/Model/Behavior/ObfuscateBehaviorTest.php
+++ b/tests/TestCase/Model/Behavior/ObfuscateBehaviorTest.php
@@ -99,6 +99,10 @@ public function testFindObfuscated()
         $results = $this->Articles->find('obfuscated')->where(['id' => 'S'])->toArray();
         $this->assertEquals('S', $results[0]['id']);
         $this->assertCount(1, $results);
+
+        $results = $this->Articles->find('obfuscated')->where(['Articles.id' => 'S'])->toArray();
+        $this->assertEquals('S', $results[0]['id']);
+        $this->assertCount(1, $results);
     }
 
     public function testObfuscate()