diff --git a/src/bitExpert/PHPStan/Magento/Reflection/MagicMethodReflection.php b/src/bitExpert/PHPStan/Magento/Reflection/MagicMethodReflection.php
index db5f263..255d2f0 100644
--- a/src/bitExpert/PHPStan/Magento/Reflection/MagicMethodReflection.php
+++ b/src/bitExpert/PHPStan/Magento/Reflection/MagicMethodReflection.php
@@ -116,6 +116,10 @@ public function getThrowType(): ?\PHPStan\Type\Type
 
     public function hasSideEffects(): \PHPStan\TrinaryLogic
     {
+        if (in_array(substr($this->name, 0, 3), ['set', 'uns'])) {
+            return \PHPStan\TrinaryLogic::createYes();
+        }
+
         return \PHPStan\TrinaryLogic::createNo();
     }
 }