diff --git a/build/jam/ArchitectureRules b/build/jam/ArchitectureRules
index ca620cd057..116dca2bfb 100644
--- a/build/jam/ArchitectureRules
+++ b/build/jam/ArchitectureRules
@@ -656,6 +656,7 @@ rule ArchitectureSetupWarnings architecture
 	EnableWerror src kits ;
 	EnableWerror src preferences ;
 	EnableWerror src servers ;
+	EnableWerror src system boot ;
 	EnableWerror src system kernel ;
 	EnableWerror src system libroot add-ons ;
 	EnableWerror src system libroot posix locale ;