diff --git a/config/initializers/new_framework_defaults_7_1.rb b/config/initializers/new_framework_defaults_7_1.rb
index 7a3bae9e2..19993439f 100644
--- a/config/initializers/new_framework_defaults_7_1.rb
+++ b/config/initializers/new_framework_defaults_7_1.rb
@@ -71,7 +71,7 @@ Rails.application.config.active_record.sqlite3_adapter_strict_strings_by_default
 ###
 # Disable deprecated singular associations names.
 #++
-# Rails.application.config.active_record.allow_deprecated_singular_associations_name = false
+Rails.application.config.active_record.allow_deprecated_singular_associations_name = false
 
 ###
 # Enable the Active Job `BigDecimal` argument serializer, which guarantees