4 files changed, 5 insertions, 6 deletions
diff --git a/lib/rubygems/security/policies.rb b/lib/rubygems/security/policies.rb
index 05c6bbdb2a..f16c46306a 100644
--- a/lib/rubygems/security/policies.rb
+++ b/lib/rubygems/security/policies.rb
@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 module Gem::Security
 
   ##
diff --git a/lib/rubygems/security/policy.rb b/lib/rubygems/security/policy.rb
index 0e13497b9d..f43e6c8c96 100644
--- a/lib/rubygems/security/policy.rb
+++ b/lib/rubygems/security/policy.rb
@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/user_interaction'
 
 ##
@@ -158,7 +158,7 @@ class Gem::Security::Policy
     path = Gem::Security.trust_dir.cert_path root
 
     unless File.exist? path then
-      message = "root cert #{root.subject} is not trusted"
+      message = "root cert #{root.subject} is not trusted".dup
 
       message << " (root of signing cert #{chain.last.subject})" if
         chain.length > 1
@@ -293,4 +293,3 @@ class Gem::Security::Policy
   alias to_s name # :nodoc:
 
 end
-
diff --git a/lib/rubygems/security/signer.rb b/lib/rubygems/security/signer.rb
index a6d0161edc..1c9d9b7d3b 100644
--- a/lib/rubygems/security/signer.rb
+++ b/lib/rubygems/security/signer.rb
@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 ##
 # Basic OpenSSL-based package signing class.
 
diff --git a/lib/rubygems/security/trust_dir.rb b/lib/rubygems/security/trust_dir.rb
index a032debf6e..bf44975cc6 100644
--- a/lib/rubygems/security/trust_dir.rb
+++ b/lib/rubygems/security/trust_dir.rb
@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 ##
 # The TrustDir manages the trusted certificates for gem signature
 # verification.