diff --git a/modules/bim/lib/open_project/bim/patches/fog_file_uploader_patch.rb b/modules/bim/lib/open_project/bim/patches/fog_file_uploader_patch.rb
index 9c4348e932..70fefe0f90 100644
--- a/modules/bim/lib/open_project/bim/patches/fog_file_uploader_patch.rb
+++ b/modules/bim/lib/open_project/bim/patches/fog_file_uploader_patch.rb
@@ -7,9 +7,9 @@ module OpenProject::Bim::Patches::FogFileUploaderPatch
     def fog_attributes
       return super unless path.ends_with?(".bcf")
 
-      {
-        "Content-Type" => "application/octet-stream"
-      }
+      super.merge({
+                    "Content-Type" => "application/octet-stream"
+                  })
     end
   end
 end