diff --git a/sys/modules/agp/Makefile b/sys/modules/agp/Makefile
index 9502a6846994..cbb05b74f119 100644
--- a/sys/modules/agp/Makefile
+++ b/sys/modules/agp/Makefile
@@ -20,7 +20,6 @@ SRCS+=  agp_apple.c
 SRCS+=	device_if.h bus_if.h agp_if.h pci_if.h
 SRCS+=	opt_agp.h
 MFILES=	kern/device_if.m kern/bus_if.m dev/agp/agp_if.m dev/pci/pci_if.m
-WERROR=
 
 EXPORT_SYMS=	agp_find_device		\
 		agp_state		\
diff --git a/sys/modules/aic7xxx/ahd/Makefile b/sys/modules/aic7xxx/ahd/Makefile
index 79c96ecb261f..0b900e9c0dee 100644
--- a/sys/modules/aic7xxx/ahd/Makefile
+++ b/sys/modules/aic7xxx/ahd/Makefile
@@ -4,7 +4,6 @@
 .PATH:	${.CURDIR}/../../../dev/aic7xxx
 KMOD=	ahd
 
-WERROR=
 GENSRCS= aic79xx_seq.h aic79xx_reg.h
 REG_PRINT_OPT=
 AHD_REG_PRETTY_PRINT=1
diff --git a/sys/modules/bios/smapi/Makefile b/sys/modules/bios/smapi/Makefile
index e2f50e57538a..1b850e463f60 100644
--- a/sys/modules/bios/smapi/Makefile
+++ b/sys/modules/bios/smapi/Makefile
@@ -6,7 +6,6 @@
 KMOD=	smapi
 SRCS=	smapi.c smapi_bios.S \
 	bus_if.h device_if.h
-WERROR=
 
 .include <bsd.kmod.mk>
 
diff --git a/sys/modules/sound/driver/maestro/Makefile b/sys/modules/sound/driver/maestro/Makefile
index 817097d7aab6..4816f22b9143 100644
--- a/sys/modules/sound/driver/maestro/Makefile
+++ b/sys/modules/sound/driver/maestro/Makefile
@@ -5,6 +5,5 @@
 KMOD=	snd_maestro
 SRCS=	device_if.h bus_if.h pci_if.h
 SRCS+=	maestro.c
-WERROR=
 
 .include <bsd.kmod.mk>