diff --git a/railties/CHANGELOG.md b/railties/CHANGELOG.md
index 255e49356f..166080c5b0 100644
--- a/railties/CHANGELOG.md
+++ b/railties/CHANGELOG.md
@@ -2,8 +2,8 @@
 
     This verifier can be used to generate and verify signed messages in the application.
 
-        message = Rails.application.message_verifier.generate('my sensible data')
-        Rails.application.message_verifier.verify(message)
+        message = Rails.application.message_verifier('salt').generate('my sensible data')
+        Rails.application.message_verifier('salt').verify(message)
         # => 'my sensible data'
 
     It is recommended not to use the same verifier for different things, so you can get different
diff --git a/railties/lib/rails/application.rb b/railties/lib/rails/application.rb
index df64736e62..e45bfaf6fc 100644
--- a/railties/lib/rails/application.rb
+++ b/railties/lib/rails/application.rb
@@ -169,18 +169,18 @@ module Rails
     #
     # ==== Parameters
     #
-    # * +verifier_name+ - the name of verifier you want to get.
+    # * +salt+ - the salt that will be used to generate the secret key of the verifier.
     #
     # ==== Examples
     #
-    #     message = Rails.application.message_verifier.generate('my sensible data')
-    #     Rails.application.message_verifier.verify(message)
+    #     message = Rails.application.message_verifier('salt').generate('my sensible data')
+    #     Rails.application.message_verifier('salt').verify(message)
     #     # => 'my sensible data'
     #
     # See the +ActiveSupport::MessageVerifier+ documentation for more information.
-    def message_verifier(verifier_name = 'default')
-      @message_verifiers[verifier_name] ||= begin
-        secret = key_generator.generate_key(verifier_name)
+    def message_verifier(salt)
+      @message_verifiers[salt] ||= begin
+        secret = key_generator.generate_key(salt)
         ActiveSupport::MessageVerifier.new(secret)
       end
     end
diff --git a/railties/test/application/configuration_test.rb b/railties/test/application/configuration_test.rb
index 585d52d258..722c940d8e 100644
--- a/railties/test/application/configuration_test.rb
+++ b/railties/test/application/configuration_test.rb
@@ -274,11 +274,11 @@ module ApplicationTests
         app.config.session_store :disabled
       end
 
-      message = app.message_verifier.generate("some_value")
+      message = app.message_verifier('salt').generate("some_value")
 
-      assert_equal 'some_value', Rails.application.message_verifier.verify(message)
+      assert_equal 'some_value', Rails.application.message_verifier('salt').verify(message)
 
-      secret = app.key_generator.generate_key('default')
+      secret = app.key_generator.generate_key('salt')
       verifier = ActiveSupport::MessageVerifier.new(secret)
       assert_equal 'some_value', verifier.verify(message)
     end
@@ -289,7 +289,7 @@ module ApplicationTests
         app.config.session_store :disabled
       end
 
-      default_verifier = app.message_verifier
+      default_verifier = app.message_verifier('salt')
       text_verifier = app.message_verifier('text')
 
       message = text_verifier.generate('some_value')
@@ -299,7 +299,7 @@ module ApplicationTests
         default_verifier.verify(message)
       end
 
-      assert_equal default_verifier.object_id, app.message_verifier.object_id
+      assert_equal default_verifier.object_id, app.message_verifier('salt').object_id
       assert_not_equal default_verifier.object_id, text_verifier.object_id
     end