diff --git a/toolchain.inc b/toolchain.inc
index 4d2fe0b..e6f530a 100644
--- a/toolchain.inc
+++ b/toolchain.inc
@@ -57,6 +57,7 @@
 ARCHDIR-x86_32  := x86
 ARCHDIR-arm     := arm
 ARCHDIR-arm64   := arm64
+ARCHDIR-riscv   := riscv
 
 CFLAGS_arm      := -mno-unaligned-access -ffunction-sections -fdata-sections