diff --git a/src/Php/CompilerBase.php b/src/Php/CompilerBase.php
index edf43899..31d12980 100644
--- a/src/Php/CompilerBase.php
+++ b/src/Php/CompilerBase.php
@@ -4342,8 +4342,7 @@ class CompilerBase extends \PhpAot\Core\Translator
         $this->assertExprCanBeUsedAsValue($expr->expr, 'instanceof operand');
         if ($this->isNameExpr($expr->class)) {
             $className = $this->getNamespacedClassName($this->parseIdentifier($expr->class));
-            $className = $this->getClassEntryPtr($className);
-            return 'php::instanceOf(' . $this->parseExpr($expr->expr) . ', ' . $className . ')';
+            return 'php::instanceOf(' . $this->parseExpr($expr->expr) . ', ' . $this->getLiteralString($className) . ')';
         } else {
             return 'php::instanceOf(' . $this->parseExpr($expr->expr) . ', ' . $this->identifierToStr($expr->class) . ')';
         }
diff --git a/tests/aot/namespace/interface-across-ns.phpt b/tests/aot/namespace/interface-across-ns.phpt
index b6217a68..e3e96d98 100644
--- a/tests/aot/namespace/interface-across-ns.phpt
+++ b/tests/aot/namespace/interface-across-ns.phpt
@@ -29,6 +29,24 @@ namespace Services\Payment {
             return $this->log;
         }
     }
+
+    class StripeProcessor2 implements \Contracts\Payment\PaymentProcessor {
+        private array $log = [];
+
+        public function pay(float $amount): bool {
+            $this->log[] = "paid:{$amount}";
+            return true;
+        }
+
+        public function refund(float $amount): bool {
+            $this->log[] = "refunded:{$amount}";
+            return true;
+        }
+
+        public function getLog(): array {
+            return $this->log;
+        }
+    }
 }
 
 namespace {
@@ -41,6 +59,13 @@ namespace {
         var_dump($p->refund(50.0));
         var_dump($p->getLog());
         var_dump($p instanceof PaymentProcessor);
+        
+        $p2 = new Services\Payment\StripeProcessor2();
+        var_dump($p2->pay(200.0));
+        var_dump($p2->refund(150.0));
+        var_dump($p2->getLog());
+        var_dump($p2 instanceof PaymentProcessor2);
+
         echo "done\n";
     }
 }
@@ -55,4 +80,13 @@ array(2) {
   string(11) "refunded:50"
 }
 bool(true)
+bool(true)
+bool(true)
+array(2) {
+  [0]=>
+  string(8) "paid:200"
+  [1]=>
+  string(12) "refunded:150"
+}
+bool(false)
 done