diff --git a/bin/wally-tool-chain-install.sh b/bin/wally-tool-chain-install.sh
index 559745713..14012c644 100755
--- a/bin/wally-tool-chain-install.sh
+++ b/bin/wally-tool-chain-install.sh
@@ -1,4 +1,6 @@
-export RISCV=/mnt/500gbs/riscv
+#!/bin/bash
+
+export RISCV="${1:-/opt/riscv}"
 export PATH=$PATH:$RISCV/bin
 
 set -e # break on error