diff --git a/sys/conf/files.i386 b/sys/conf/files.i386
index 314da6b4fd0f..ca0f8ea495b3 100644
--- a/sys/conf/files.i386
+++ b/sys/conf/files.i386
@@ -286,7 +286,7 @@ i386/isa/scd.c			count		scd
 i386/isa/spic.c			optional	spic
 i386/isa/spigot.c		count		spigot
 i386/isa/spkr.c			optional	speaker
-i386/isa/stallion.c		optional	stl
+i386/isa/stallion.c		optional	stl nowerror
 i386/isa/tw.c			count		tw
 i386/isa/vesa.c			optional	vga vesa
 i386/isa/wt.c			count		wt
diff --git a/sys/conf/files.pc98 b/sys/conf/files.pc98
index 9c46188c0502..478ec4bd3463 100644
--- a/sys/conf/files.pc98
+++ b/sys/conf/files.pc98
@@ -267,7 +267,7 @@ i386/isa/rc.c			count		rc
 i386/isa/scd.c			count		scd
 i386/isa/spic.c			optional	spic
 i386/isa/spigot.c		count		spigot
-i386/isa/stallion.c		optional	stl
+i386/isa/stallion.c		optional	stl nowerror
 i386/isa/tw.c			count		tw
 i386/isa/wt.c			count		wt
 i386/linux/imgact_linux.c	optional	compat_linux