diff --git a/rules/type-declaration/src/Rector/ClassMethod/AddArrayReturnDocTypeRector.php b/rules/type-declaration/src/Rector/ClassMethod/AddArrayReturnDocTypeRector.php
index bb21dde271e9..8f912eaa74c7 100644
--- a/rules/type-declaration/src/Rector/ClassMethod/AddArrayReturnDocTypeRector.php
+++ b/rules/type-declaration/src/Rector/ClassMethod/AddArrayReturnDocTypeRector.php
@@ -109,9 +109,11 @@ public function refactor(Node $node): ?Node
             return null;
         }
 
-        /** @var PhpDocInfo $phpDocInfo */
+        /** @var PhpDocInfo|null $phpDocInfo */
         $phpDocInfo = $node->getAttribute(AttributeKey::PHP_DOC_INFO);
-        $phpDocInfo->changeReturnType($inferedType);
+        if ($phpDocInfo instanceof PhpDocInfo) {
+            $phpDocInfo->changeReturnType($inferedType);
+        }
 
         return $node;
     }