diff --git a/build/jam/ArchitectureRules b/build/jam/ArchitectureRules
index d0e647881e..18cfe1f0db 100644
--- a/build/jam/ArchitectureRules
+++ b/build/jam/ArchitectureRules
@@ -657,7 +657,7 @@ rule ArchitectureSetupWarnings architecture
 	EnableWerror src add-ons kernel debugger ;
 #	EnableWerror src add-ons kernel drivers audio ;
 	EnableWerror src add-ons kernel drivers bluetooth ;
-#	EnableWerror src add-ons kernel drivers bus ;
+	EnableWerror src add-ons kernel drivers bus ;
 	EnableWerror src add-ons kernel drivers common ;
 #	EnableWerror src add-ons kernel drivers disk ;
 	EnableWerror src add-ons kernel drivers dvb ;