6 files changed, 7 insertions, 7 deletions
diff --git a/lib/rubygems/commands/stale_command.rb b/lib/rubygems/commands/stale_command.rb
index 9468fce3f4..2812179d92 100644
--- a/lib/rubygems/commands/stale_command.rb
+++ b/lib/rubygems/commands/stale_command.rb
@@ -17,7 +17,7 @@ longer using.
   end
 
   def usage # :nodoc:
-    "#{program_name}"
+    program_name.to_s
   end
 
   def execute
diff --git a/lib/rubygems/deprecate.rb b/lib/rubygems/deprecate.rb
index ffe07d14d2..c0554aa763 100644
--- a/lib/rubygems/deprecate.rb
+++ b/lib/rubygems/deprecate.rb
@@ -154,7 +154,7 @@ module Gem::Deprecate
                 ". It will be removed in Rubygems #{version}.\n",
         ]
 
-        alert_warning "#{msg.join}" unless Gem::Deprecate.skip
+        alert_warning msg.join.to_s unless Gem::Deprecate.skip
       end
     end
   end
diff --git a/lib/rubygems/gemcutter_utilities.rb b/lib/rubygems/gemcutter_utilities.rb
index 6ac08117ce..3d72e28dbe 100644
--- a/lib/rubygems/gemcutter_utilities.rb
+++ b/lib/rubygems/gemcutter_utilities.rb
@@ -269,7 +269,7 @@ module Gem::GemcutterUtilities
     else
       say "Please select scopes you want to enable for the API key (y/n)"
       API_SCOPES.each do |scope|
-        selected = ask_yes_no("#{scope}", false)
+        selected = ask_yes_no(scope.to_s, false)
         scope_params[scope] = true if selected
       end
       say "\n"
diff --git a/lib/rubygems/resolver/conflict.rb b/lib/rubygems/resolver/conflict.rb
index aba6d73ea7..fa0d3f089e 100644
--- a/lib/rubygems/resolver/conflict.rb
+++ b/lib/rubygems/resolver/conflict.rb
@@ -131,7 +131,7 @@ class Gem::Resolver::Conflict
 
         current = current.parent
       when Gem::Resolver::DependencyRequest then
-        path << "#{current.dependency}"
+        path << current.dependency.to_s
 
         current = current.requester
       else
diff --git a/lib/rubygems/s3_uri_signer.rb b/lib/rubygems/s3_uri_signer.rb
index 5522753af5..ae085c39ff 100644
--- a/lib/rubygems/s3_uri_signer.rb
+++ b/lib/rubygems/s3_uri_signer.rb
@@ -10,7 +10,7 @@ class Gem::S3URISigner
     end
 
     def to_s # :nodoc:
-      "#{super}"
+      (super).to_s
     end
   end
 
@@ -20,7 +20,7 @@ class Gem::S3URISigner
     end
 
     def to_s # :nodoc:
-      "#{super}"
+      (super).to_s
     end
   end
 
diff --git a/lib/rubygems/security.rb b/lib/rubygems/security.rb
index 606cd241f7..5832db7f8b 100644
--- a/lib/rubygems/security.rb
+++ b/lib/rubygems/security.rb
@@ -510,7 +510,7 @@ module Gem::Security
                    extensions = EXTENSIONS)
     raise Gem::Security::Exception,
           "incorrect signing key for re-signing " +
-          "#{expired_certificate.subject}" unless
+          expired_certificate.subject.to_s unless
       expired_certificate.check_private_key(private_key)
 
     unless expired_certificate.subject.to_s ==