diff --git a/guides/source/autoloading_and_reloading_constants.md b/guides/source/autoloading_and_reloading_constants.md
index 3b212dab12..efd6ad6665 100644
--- a/guides/source/autoloading_and_reloading_constants.md
+++ b/guides/source/autoloading_and_reloading_constants.md
@@ -57,7 +57,7 @@ The autoloading `zeitwerk` mode is enabled by default in Rails 6 applications ru
 
 ```ruby
 # config/application.rb
-config.load_defaults "6.0" # enables zeitwerk mode in CRuby
+config.load_defaults 6.0 # enables zeitwerk mode in CRuby
 ```
 
 In `zeitwerk` mode, Rails uses [Zeitwerk](https://github.com/fxn/zeitwerk) internally to autoload, reload, and eager load. Rails instantiates and configures a dedicated Zeitwerk instance that manages the project.
@@ -363,7 +363,7 @@ Applications can load Rails 6 defaults and still use the classic autoloader this
 
 ```ruby
 # config/application.rb
-config.load_defaults "6.0"
+config.load_defaults 6.0
 config.autoloader = :classic
 ```
 
diff --git a/guides/source/configuring.md b/guides/source/configuring.md
index 3d21f51264..37ea5c5c72 100644
--- a/guides/source/configuring.md
+++ b/guides/source/configuring.md
@@ -162,7 +162,7 @@ defaults to `:debug` for all environments. The available log levels are: `:debug
 * `config.autoloader` sets the autoloading mode. This option defaults to `:zeitwerk` if `6.0` is specified in `config.load_defaults`. Applications can still use the classic autoloader by setting this value to `:classic` after loading the framework defaults:
 
     ```ruby
-    config.load_defaults "6.0"
+    config.load_defaults 6.0
     config.autoloader = :classic
     ```
 
diff --git a/guides/source/upgrading_ruby_on_rails.md b/guides/source/upgrading_ruby_on_rails.md
index b099daae30..a212464622 100644
--- a/guides/source/upgrading_ruby_on_rails.md
+++ b/guides/source/upgrading_ruby_on_rails.md
@@ -523,7 +523,7 @@ Applications can load Rails 6 defaults and still use the classic autoloader by s
 ```ruby
 # config/application.rb
 
-config.load_defaults "6.0"
+config.load_defaults 6.0
 config.autoloader = :classic
 ```