diff --git a/src/Illuminate/Filesystem/FilesystemAdapter.php b/src/Illuminate/Filesystem/FilesystemAdapter.php
index 6734ae18f6b4..9198c757da86 100644
--- a/src/Illuminate/Filesystem/FilesystemAdapter.php
+++ b/src/Illuminate/Filesystem/FilesystemAdapter.php
@@ -141,7 +141,7 @@ public function response($path, $name = null, array $headers = [], $disposition
         $filename = $name ?? basename($path);
 
         $disposition = $response->headers->makeDisposition(
-            $disposition, $filename, Str::ascii($filename)
+            $disposition, $filename, $this->fallbackName($filename)
         );
 
         $response->headers->replace($headers + [
@@ -172,6 +172,17 @@ public function download($path, $name = null, array $headers = [])
         return $this->response($path, $name, $headers, 'attachment');
     }
 
+    /**
+     * Convert the string to ASCII characters that are equivalent to the given name.
+     *
+     * @param  string  $name
+     * @return string
+     */
+    protected function fallbackName($name)
+    {
+        return str_replace('%', '', Str::ascii($name));
+    }
+
     /**
      * Write the contents of a file.
      *
diff --git a/tests/Filesystem/FilesystemAdapterTest.php b/tests/Filesystem/FilesystemAdapterTest.php
index 7c111e9c29c7..3be440b353a3 100644
--- a/tests/Filesystem/FilesystemAdapterTest.php
+++ b/tests/Filesystem/FilesystemAdapterTest.php
@@ -70,6 +70,15 @@ public function testDownloadNonAsciiEmptyFilename()
         $this->assertEquals('attachment; filename=pizdyuk.txt; filename*=utf-8\'\'%D0%BF%D0%B8%D0%B7%D0%B4%D1%8E%D0%BA.txt', $response->headers->get('content-disposition'));
     }
 
+    public function testDownloadPercentInFilename()
+    {
+        $this->filesystem->write('Hello%World.txt', 'Hello World');
+        $files = new FilesystemAdapter($this->filesystem);
+        $response = $files->download('Hello%World.txt', 'Hello%World.txt');
+        $this->assertInstanceOf(StreamedResponse::class, $response);
+        $this->assertEquals('attachment; filename=HelloWorld.txt; filename*=utf-8\'\'Hello%25World.txt', $response->headers->get('content-disposition'));
+    }
+
     public function testExists()
     {
         $this->filesystem->write('file.txt', 'Hello World');