diff --git a/sys/conf/files.pc98 b/sys/conf/files.pc98
index 1371a8813a1f..8ec4f7cb928e 100644
--- a/sys/conf/files.pc98
+++ b/sys/conf/files.pc98
@@ -172,6 +172,7 @@ i386/i386/swtch.s		standard
 i386/i386/sys_machdep.c		standard
 i386/i386/trap.c		standard
 i386/i386/tsc.c			standard
+i386/i386/uio_machdep.c		standard
 i386/i386/vm86.c		standard
 i386/i386/vm_machdep.c		standard
 i386/ibcs2/ibcs2_errno.c	optional	ibcs2