diff --git a/packages/CodeQuality/src/Rector/Class_/CompleteDynamicPropertiesRector.php b/packages/CodeQuality/src/Rector/Class_/CompleteDynamicPropertiesRector.php
index 0df05436b47c..d930cb4201e7 100644
--- a/packages/CodeQuality/src/Rector/Class_/CompleteDynamicPropertiesRector.php
+++ b/packages/CodeQuality/src/Rector/Class_/CompleteDynamicPropertiesRector.php
@@ -7,6 +7,7 @@
 use PhpParser\Node\Expr\Assign;
 use PhpParser\Node\Expr\PropertyFetch;
 use PhpParser\Node\Expr\StaticCall;
+use PhpParser\Node\Expr\Variable;
 use PhpParser\Node\Stmt\Class_;
 use PhpParser\Node\Stmt\ClassMethod;
 use PhpParser\Node\Stmt\Property;
@@ -185,8 +186,15 @@ private function resolveFetchedLocalPropertyNameToTypes(Class_ $class): array
                 return null;
             }
 
-            /** @var string $propertyName */
+            if ($node->name instanceof Variable) {
+                return null;
+            }
+
             $propertyName = $this->getName($node->name);
+            if ($propertyName === null) {
+                return null;
+            }
+
             $propertyFetchType = $this->resolvePropertyFetchType($node);
 
             $fetchedLocalPropertyNameToTypes[$propertyName][] = $propertyFetchType;
diff --git a/packages/CodeQuality/tests/Rector/Class_/CompleteDynamicPropertiesRector/CompleteDynamicPropertiesRectorTest.php b/packages/CodeQuality/tests/Rector/Class_/CompleteDynamicPropertiesRector/CompleteDynamicPropertiesRectorTest.php
index 1d9773ec857c..b37fa43bc2bd 100644
--- a/packages/CodeQuality/tests/Rector/Class_/CompleteDynamicPropertiesRector/CompleteDynamicPropertiesRectorTest.php
+++ b/packages/CodeQuality/tests/Rector/Class_/CompleteDynamicPropertiesRector/CompleteDynamicPropertiesRectorTest.php
@@ -18,6 +18,7 @@ public function test(): void
             __DIR__ . '/Fixture/skip_magic_parent.php.inc',
             __DIR__ . '/Fixture/skip_magic.php.inc',
             __DIR__ . '/Fixture/skip_laravel_closure_binding.php.inc',
+            __DIR__ . '/Fixture/skip_dynamic_properties.php.inc',
         ]);
     }
 
diff --git a/packages/CodeQuality/tests/Rector/Class_/CompleteDynamicPropertiesRector/Fixture/skip_dynamic_properties.php.inc b/packages/CodeQuality/tests/Rector/Class_/CompleteDynamicPropertiesRector/Fixture/skip_dynamic_properties.php.inc
new file mode 100644
index 000000000000..9803c3422839
--- /dev/null
+++ b/packages/CodeQuality/tests/Rector/Class_/CompleteDynamicPropertiesRector/Fixture/skip_dynamic_properties.php.inc
@@ -0,0 +1,14 @@
+<?php
+
+namespace Rector\CodeQuality\Tests\Rector\Class_\CompleteDynamicPropertiesRector\Fixture;
+
+class SkipDynamicProperties
+{
+    public function unserialize($serialized)
+    {
+        $data = \unserialize($serialized);
+        foreach ($data as $k => $v) {
+            $this->$k = $v;
+        }
+    }
+}