diff --git a/spcd/bootstrap.sh b/spcd/bootstrap.sh
index 53175ef..c2320ba 100644
--- a/spcd/bootstrap.sh
+++ b/spcd/bootstrap.sh
@@ -1224,10 +1224,11 @@ spcd_python_write_module() {
         spcd_wpm__text="${spcd_wpm__text}${spcd_wpm__value}
 "
     done
+    eval "spcd_wpm__index=\$((SPCD_STEP_${SPCD_STEP_LEVEL}_INDEX + 1))"
     for spcd_wpm__root in \
         "${SPCD_PYTHON_PACKAGES}" "${SPCD_PYTHON_VENV_PACKAGES}"; do
         spcd_os_write "${spcd_wpm__root}/env.py" "${spcd_wpm__text}
-SPCD_STEP = $((SPCD_STEP_${SPCD_STEP_LEVEL}_INDEX + 1))
+SPCD_STEP = ${spcd_wpm__index}
 "
     done
 }