diff --git a/rules-tests/TypeDeclaration/Rector/ClassMethod/KnownMagicClassMethodTypeRector/Fixture/get_and_set.php.inc b/rules-tests/TypeDeclaration/Rector/ClassMethod/KnownMagicClassMethodTypeRector/Fixture/get_and_set.php.inc
index d93ec6f791c..134da3a0697 100644
--- a/rules-tests/TypeDeclaration/Rector/ClassMethod/KnownMagicClassMethodTypeRector/Fixture/get_and_set.php.inc
+++ b/rules-tests/TypeDeclaration/Rector/ClassMethod/KnownMagicClassMethodTypeRector/Fixture/get_and_set.php.inc
@@ -21,7 +21,7 @@ namespace Rector\Tests\TypeDeclaration\Rector\ClassMethod\KnownMagicClassMethodT
 
 final class GetAndSet
 {
-    public function __get(string $method)
+    public function __get(string $method): mixed
     {
     }
 
diff --git a/rules/TypeDeclaration/Rector/ClassMethod/KnownMagicClassMethodTypeRector.php b/rules/TypeDeclaration/Rector/ClassMethod/KnownMagicClassMethodTypeRector.php
index 7be3745cecc..8bb419c6902 100644
--- a/rules/TypeDeclaration/Rector/ClassMethod/KnownMagicClassMethodTypeRector.php
+++ b/rules/TypeDeclaration/Rector/ClassMethod/KnownMagicClassMethodTypeRector.php
@@ -110,6 +110,11 @@ public function refactor(Node $node): ?Node
                 }
             }
 
+            if ($this->isName($classMethod, MethodName::__GET) && $this->phpVersionProvider->isAtLeastPhpVersion(PhpVersionFeature::MIXED_TYPE) && ! $classMethod->returnType instanceof Node) {
+                $classMethod->returnType = new Identifier('mixed');
+                $hasChanged = true;
+            }
+
             if ($this->isName($classMethod, MethodName::__SET) && $this->phpVersionProvider->isAtLeastPhpVersion(
                 PhpVersionFeature::MIXED_TYPE
             )) {