diff --git a/src/cmd/linuxkit/util/arch.go b/src/cmd/linuxkit/util/arch.go
index 0e44ad215..746f7abb4 100644
--- a/src/cmd/linuxkit/util/arch.go
+++ b/src/cmd/linuxkit/util/arch.go
@@ -9,6 +9,8 @@ func MArch(in string) (string, error) {
 		return "x86_64", nil
 	case "aarch64", "arm64":
 		return "aarch64", nil
+	case "riscv64":
+		return "riscv64", nil
 	}
 	return "", fmt.Errorf("unknown arch %q", in)
 }