diff --git a/sys/Makefile b/sys/Makefile
index 75757463779c..fa8941ef3378 100644
--- a/sys/Makefile
+++ b/sys/Makefile
@@ -8,7 +8,7 @@ CSCOPEDIRS=	boot bsm cam cddl compat conf contrib crypto ddb dev fs gdb \
 		rpc security sys ufs vm xdr xen ${CSCOPE_ARCHDIR}
 .if !defined(CSCOPE_ARCHDIR)
 .if defined(ALL_ARCH)
-CSCOPE_ARCHDIR = amd64 arm arm64 i386 mips pc98 powerpc sparc64 x86
+CSCOPE_ARCHDIR = amd64 arm arm64 i386 mips pc98 powerpc riscv sparc64 x86
 .else
 CSCOPE_ARCHDIR = ${MACHINE}
 .if ${MACHINE} != ${MACHINE_CPUARCH}