diff --git a/config.nims b/config.nims
index b989c4fd7a0..2655732179a 100644
--- a/config.nims
+++ b/config.nims
@@ -27,6 +27,7 @@ switch "mm", "orc"
 switch "arm.nuttx.gcc.exe", "arm-none-eabi-gcc"
 switch "arm64.nuttx.gcc.exe", "aarch64-none-elf-gcc"
 switch "riscv32.nuttx.gcc.exe", "riscv64-unknown-elf-gcc"
+switch "riscv64.nuttx.gcc.exe", "riscv64-unknown-elf-gcc"
 switch "amd64.nuttx.gcc.exe", "x86_64-linux-gnu-gcc"
 
 switch "nimcache", ".nimcache"