diff --git a/Library/Homebrew/extend/os/mac/utils/bottles.rb b/Library/Homebrew/extend/os/mac/utils/bottles.rb
index 7d601f14f46d5..149706438820b 100644
--- a/Library/Homebrew/extend/os/mac/utils/bottles.rb
+++ b/Library/Homebrew/extend/os/mac/utils/bottles.rb
@@ -7,7 +7,7 @@ class << self
       undef tag
 
       def tag(symbol = nil)
-        return Utils::Bottles::Tag.from_symbol(symbol) if symbol.present?
+        return Utils::Bottles::Tag.from_symbol(symbol.to_sym) if symbol.present?
 
         Utils::Bottles::Tag.new(system: MacOS.version.to_sym, arch: Hardware::CPU.arch)
       end
diff --git a/Library/Homebrew/utils/bottles.rb b/Library/Homebrew/utils/bottles.rb
index 1ef0334ceac29..761f84dd079d3 100644
--- a/Library/Homebrew/utils/bottles.rb
+++ b/Library/Homebrew/utils/bottles.rb
@@ -11,7 +11,7 @@ module Bottles
     class << self
       # Gets the tag for the running OS.
       def tag(symbol = nil)
-        return Tag.from_symbol(symbol) if symbol.present?
+        return Tag.from_symbol(symbol.to_sym) if symbol.present?
 
         @tag ||= Tag.new(system: HOMEBREW_SYSTEM.downcase.to_sym,
                          arch:   HOMEBREW_PROCESSOR.downcase.to_sym)