diff --git a/Library/Homebrew/cask/cask.rb b/Library/Homebrew/cask/cask.rb
index 0e8fb56f7e563..c25726316ac6f 100644
--- a/Library/Homebrew/cask/cask.rb
+++ b/Library/Homebrew/cask/cask.rb
@@ -130,7 +130,7 @@ def config_path
     end
 
     def checksumable?
-      url.using.blank? || url.using == :post
+      DownloadStrategyDetector.detect(url.to_s, url.using) <= AbstractFileDownloadStrategy
     end
 
     def download_sha_path