diff --git a/rules/Orm30/Rector/MethodCall/CastDoctrineExprToStringRector.php b/rules/Orm30/Rector/MethodCall/CastDoctrineExprToStringRector.php
index 3fa370bc..2ce8a83e 100644
--- a/rules/Orm30/Rector/MethodCall/CastDoctrineExprToStringRector.php
+++ b/rules/Orm30/Rector/MethodCall/CastDoctrineExprToStringRector.php
@@ -69,12 +69,11 @@ public function getNodeTypes(): array
         return [MethodCall::class];
     }
 
+    /**
+     * @param MethodCall $node
+     */
     public function refactor(Node $node): ?Node
     {
-        if (! $node instanceof MethodCall) {
-            return null;
-        }
-
         if (! $this->isObjectType($node->var, new ObjectType(DoctrineClass::QUERY_EXPR))) {
             return null;
         }
diff --git a/src/NodeAnalyzer/DoctrineEntityDetector.php b/src/NodeAnalyzer/DoctrineEntityDetector.php
index 17cd9dc9..05ed978e 100644
--- a/src/NodeAnalyzer/DoctrineEntityDetector.php
+++ b/src/NodeAnalyzer/DoctrineEntityDetector.php
@@ -6,6 +6,7 @@
 
 use PhpParser\Node\Name;
 use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\ClassMethod;
 use PHPStan\Reflection\ReflectionProvider;
 use Rector\NodeAnalyzer\DoctrineEntityAnalyzer;
 
@@ -22,7 +23,13 @@ public function __construct(
 
     public function detect(Class_ $class): bool
     {
-        // A. check annotations
+        // A. check static function mapping, fields are mapped in loadMetadata() method
+        // @see https://www.doctrine-project.org/projects/doctrine-orm/en/3.6/reference/php-mapping.html#static-function
+        if ($class->getMethod('loadMetadata') instanceof ClassMethod) {
+            return true;
+        }
+
+        // B. check annotations
         if ($this->doctrineEntityAnalyzer->hasClassAnnotation($class)) {
             return true;
         }
@@ -33,7 +40,7 @@ public function detect(Class_ $class): bool
 
         $className = $class->namespacedName->toString();
 
-        // B. check attributes
+        // C. check attributes
         $classReflection = $this->reflectionProvider->getClass($className);
 
         return $this->doctrineEntityAnalyzer->hasClassReflectionAttribute($classReflection);
diff --git a/tests/NodeAnalyzer/DoctrineEntityDetector/DoctrineEntityDetectorTest.php b/tests/NodeAnalyzer/DoctrineEntityDetector/DoctrineEntityDetectorTest.php
new file mode 100644
index 00000000..493ecb35
--- /dev/null
+++ b/tests/NodeAnalyzer/DoctrineEntityDetector/DoctrineEntityDetectorTest.php
@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\Doctrine\Tests\NodeAnalyzer\DoctrineEntityDetector;
+
+use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\ClassMethod;
+use Rector\Doctrine\NodeAnalyzer\DoctrineEntityDetector;
+use Rector\Testing\PHPUnit\AbstractLazyTestCase;
+
+final class DoctrineEntityDetectorTest extends AbstractLazyTestCase
+{
+    private DoctrineEntityDetector $doctrineEntityDetector;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->doctrineEntityDetector = $this->make(DoctrineEntityDetector::class);
+    }
+
+    public function testDetectStaticFunctionMapping(): void
+    {
+        $class = new Class_('SomeEntity');
+        $class->stmts[] = new ClassMethod('loadMetadata');
+
+        $this->assertTrue($this->doctrineEntityDetector->detect($class));
+    }
+}