diff --git a/Library/Homebrew/cask/audit.rb b/Library/Homebrew/cask/audit.rb
index 3a6569bd8b..594843a2fd 100644
--- a/Library/Homebrew/cask/audit.rb
+++ b/Library/Homebrew/cask/audit.rb
@@ -311,6 +311,7 @@ module Cask
     sig { void }
     def audit_download_url_format
       return unless cask.url
+      return if block_url_offline?
 
       odebug "Auditing URL format"
       if bad_sourceforge_url?