diff --git a/include/image_upload.hpp b/include/image_upload.hpp
index ab2901e..18a0c09 100644
--- a/include/image_upload.hpp
+++ b/include/image_upload.hpp
@@ -99,7 +99,7 @@
     BMCWEB_LOG_DEBUG << "Writing file to " << filepath;
     std::ofstream out(filepath, std::ofstream::out | std::ofstream::binary |
                                     std::ofstream::trunc);
-    out << req.body;
+    out << req.body();
     out.close();
     timeout.async_wait(timeoutHandler);
 }