diff --git a/guides/source/configuring.md b/guides/source/configuring.md
index c30b806907..78dc84180c 100644
--- a/guides/source/configuring.md
+++ b/guides/source/configuring.md
@@ -449,7 +449,6 @@ There are a few configuration options available in Active Support:
 
 * `ActiveSupport::Deprecation.silenced` sets whether or not to display deprecation warnings.
 
-* `ActiveSupport::Logger.silencer` is set to `false` to disable the ability to silence logging in a block. The default is `true`.
 
 ### Configuring a Database