diff --git a/Library/Homebrew/cask/quarantine.rb b/Library/Homebrew/cask/quarantine.rb
index e8256638dd..03c82d93c4 100644
--- a/Library/Homebrew/cask/quarantine.rb
+++ b/Library/Homebrew/cask/quarantine.rb
@@ -31,7 +31,7 @@ module Cask
     def check_quarantine_support
       odebug "Checking quarantine support"
 
-      if !system_command(xattr, args:[ "-h" ], print_stderr: false).success?
+      if !system_command(xattr, args: ["-h"], print_stderr: false).success?
         odebug "There's no working version of `xattr` on this system."
         :xattr_broken
       elsif swift.nil?
diff --git a/Library/Homebrew/diagnostic.rb b/Library/Homebrew/diagnostic.rb
index 54b5a5dac9..8cc52b3455 100644
--- a/Library/Homebrew/diagnostic.rb
+++ b/Library/Homebrew/diagnostic.rb
@@ -1000,7 +1000,7 @@ module Homebrew
       end
 
       def check_cask_xattr
-        result = system_command "/usr/bin/xattr", args: [ "-h" ]
+        result = system_command "/usr/bin/xattr", args: ["-h"]
 
         return if result.status.success?