diff --git a/bin/pyodide b/bin/pyodide
index adac9f553..653c925c9 100755
--- a/bin/pyodide
+++ b/bin/pyodide
@@ -1,8 +1,8 @@
-#!/bin/sh
-set -x
+#!/bin/bash
 
 # get the absolute path to the root directory
-ROOTDIR=$(python -c 'import pathlib, sys; print(pathlib.Path(sys.argv[1]).resolve().parent)' \
+ROOTDIR=$(python -c 'import pathlib, sys; \
+                     print(pathlib.Path(sys.argv[1]).resolve().parents[1])' \
           "${BASH_SOURCE[0]}")
 
 export PYTHONPATH="${PYTHONPATH}:${ROOTDIR}"