diff --git a/sys/Makefile b/sys/Makefile
index cb5fd13164b4..48edc48b5515 100644
--- a/sys/Makefile
+++ b/sys/Makefile
@@ -14,7 +14,7 @@ CSCOPEDIRS=	boot bsm cam cddl compat conf contrib crypto ddb dev fs gdb \
 		netsmb nfs nfsclient nfsserver nlm opencrypto \
 		pci rpc security sys ufs vm xdr ${CSCOPE_ARCHDIR}
 .if defined(ALL_ARCH)
-CSCOPE_ARCHDIR ?= amd64 arm i386 ia64 mips pc98 powerpc sparc64 sun4v
+CSCOPE_ARCHDIR ?= amd64 arm i386 ia64 mips pc98 powerpc sparc64 sun4v x86
 .else
 CSCOPE_ARCHDIR ?= ${MACHINE}
 .endif