diff --git a/src/Factory/HttpFactory.php b/src/Factory/HttpFactory.php
index aeec5fa..6f32edc 100644
--- a/src/Factory/HttpFactory.php
+++ b/src/Factory/HttpFactory.php
@@ -33,9 +33,9 @@ class HttpFactory
         return new EmptyResponse($code, $headers);
     }
 
-    public static function createPdfResponse(string $binary, int $code = 200, array $headers = []) : ResponseInterface
+    public static function createPdfResponse(\Stringable $binary, int $code = 200, array $headers = []) : ResponseInterface
     {
-        return new PdfResponse($binary, $code, $headers);
+        return new PdfResponse((string) $binary, $code, $headers);
     }
 
     public static function createDownloadableResponse(string $data, string $filename, int $code = 200, array $headers = []) : ResponseInterface
@@ -52,4 +52,4 @@ class HttpFactory
     {
         return new FileDownloadResponse($path, $code, $headers);
     }
-}
\ No newline at end of file
+}