diff --git a/rules/Naming/Guard/BreakingVariableRenameGuard.php b/rules/Naming/Guard/BreakingVariableRenameGuard.php
index 79df34938bbd..5a6cafbc28c9 100644
--- a/rules/Naming/Guard/BreakingVariableRenameGuard.php
+++ b/rules/Naming/Guard/BreakingVariableRenameGuard.php
@@ -277,7 +277,6 @@ private function isDateTimeAtNamingConvention(Param $param): bool
 
         $objectType = new ObjectType('DateTimeInterface');
         $isDateTimeInterfaceNotSuperOfType = $objectType->isSuperTypeOf($type)->no();
-
         if ($isDateTimeInterfaceNotSuperOfType) {
             return false;
         }
diff --git a/rules/Php71/NodeAnalyzer/CountableAnalyzer.php b/rules/Php71/NodeAnalyzer/CountableAnalyzer.php
index c0ca79622c0a..0112e66f3995 100644
--- a/rules/Php71/NodeAnalyzer/CountableAnalyzer.php
+++ b/rules/Php71/NodeAnalyzer/CountableAnalyzer.php
@@ -9,6 +9,7 @@
 use PhpParser\Node\Expr\PropertyFetch;
 use PhpParser\Node\Stmt;
 use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Type\ObjectType;
 use PHPStan\Type\TypeWithClassName;
 use PHPStan\Type\UnionType;
 use Rector\NodeNameResolver\NodeNameResolver;
@@ -62,11 +63,12 @@ public function isCastableArrayType(Expr $expr): bool
             return false;
         }
 
-        if (is_a($callerObjectType->getClassName(), Stmt::class, true)) {
-            return false;
-        }
+        $stmtOrArray = new UnionType([
+            new ObjectType(Stmt::class),
+            new ObjectType(Array_::class),
+        ]);
 
-        if (is_a($callerObjectType->getClassName(), Array_::class, true)) {
+        if ($stmtOrArray->isSuperTypeOf($callerObjectType)->yes()) {
             return false;
         }