diff --git a/rules/DeadCode/Rector/If_/RemoveDeadInstanceOfRector.php b/rules/DeadCode/Rector/If_/RemoveDeadInstanceOfRector.php
index 4003d586319..a0f97fa4ae9 100644
--- a/rules/DeadCode/Rector/If_/RemoveDeadInstanceOfRector.php
+++ b/rules/DeadCode/Rector/If_/RemoveDeadInstanceOfRector.php
@@ -14,7 +14,6 @@
 use PhpParser\Node\Expr\PropertyFetch;
 use PhpParser\Node\Expr\StaticPropertyFetch;
 use PhpParser\Node\Name;
-use PhpParser\Node\Name\FullyQualified;
 use PhpParser\Node\Stmt;
 use PhpParser\Node\Stmt\Expression;
 use PhpParser\Node\Stmt\If_;
@@ -158,10 +157,6 @@ private function isInstanceofTheSameType(Instanceof_ $instanceof): ?bool
             return null;
         }
 
-        if (! $instanceof->class instanceof FullyQualified) {
-            return null;
-        }
-
         $exprType = $this->nodeTypeResolver->getNativeType($instanceof->expr);
         if (! $exprType instanceof ObjectType) {
             return null;