diff --git a/config/initializers/new_framework_defaults_7_1.rb b/config/initializers/new_framework_defaults_7_1.rb
index 7a45f6d21..1b93dbade 100644
--- a/config/initializers/new_framework_defaults_7_1.rb
+++ b/config/initializers/new_framework_defaults_7_1.rb
@@ -91,7 +91,7 @@ Rails.application.config.active_job.use_big_decimal_serializer = true
 # Options are `true`, and `false`. If `false`, the exception will be reported
 # as `handled` and logged instead.
 #++
-# Rails.application.config.active_support.raise_on_invalid_cache_expiration_time = true
+Rails.application.config.active_support.raise_on_invalid_cache_expiration_time = true
 
 ###
 # Specify whether Query Logs will format tags using the SQLCommenter format