diff --git a/Library/Homebrew/os/mac.rb b/Library/Homebrew/os/mac.rb
index c4dbe7a42b..705726f945 100644
--- a/Library/Homebrew/os/mac.rb
+++ b/Library/Homebrew/os/mac.rb
@@ -64,8 +64,6 @@ module OS
     def preferred_perl_version
       if version >= :big_sur
         "5.30"
-      elsif version == :catalina
-        "5.28"
       else
         "5.18"
       end