diff --git a/Library/Homebrew/test/download_strategies/curl_spec.rb b/Library/Homebrew/test/download_strategies/curl_spec.rb
index a9a31f3b8d..ff94c94f7e 100644
--- a/Library/Homebrew/test/download_strategies/curl_spec.rb
+++ b/Library/Homebrew/test/download_strategies/curl_spec.rb
@@ -75,7 +75,7 @@ describe CurlDownloadStrategy do
             /curl/,
             hash_including(args: array_including_cons(
               "--user-agent",
-              a_string_matching(/Mozilla.*Mac OS X 14.*AppleWebKit/),
+              a_string_matching(/Mozilla.*Mac OS X 10_15_7.*AppleWebKit/),
             )),
           )
           .at_least(:once)