diff --git a/build/jam/ArchitectureRules b/build/jam/ArchitectureRules
index 6612cb113f..af50aea3df 100644
--- a/build/jam/ArchitectureRules
+++ b/build/jam/ArchitectureRules
@@ -696,7 +696,7 @@ rule ArchitectureSetupWarnings architecture
 	EnableWerror src add-ons kernel network notifications ;
 	EnableWerror src add-ons kernel network ppp ;
 	EnableWerror src add-ons kernel network protocols ;
-#	EnableWerror src add-ons kernel network stack ;
+	EnableWerror src add-ons kernel network stack ;
 	EnableWerror src add-ons kernel partitioning_systems ;
 	EnableWerror src add-ons kernel power ;
 	EnableWerror src add-ons locale ;