diff --git a/Library/Homebrew/download_strategy.rb b/Library/Homebrew/download_strategy.rb
index 2ed5684828..ed3c11c4bb 100644
--- a/Library/Homebrew/download_strategy.rb
+++ b/Library/Homebrew/download_strategy.rb
@@ -374,7 +374,7 @@ class CurlDownloadStrategy < AbstractFileDownloadStrategy
     content_disposition_parser = Mechanize::HTTP::ContentDispositionParser.new
 
     parse_content_disposition = lambda do |line|
-      next unless content_disposition = content_disposition_parser.parse(line, true)
+      next unless content_disposition = content_disposition_parser.parse(line.sub(/; *$/, ""), true)
 
       filename = nil