diff --git a/bin/miaou-bash b/bin/miaou-bash
index 05c7852..cf198af 100755
--- a/bin/miaou-bash
+++ b/bin/miaou-bash
@@ -626,7 +626,7 @@ function version {
 function parse_options {
   HEREDOC=false
   if [[ $# == 0 ]]; then
-    if [[ -t 0 ]]; then
+    if [[ -t 0 || -v CHILD_PROCESS ]]; then
       >&2 echo 'ERROR: script expected!'
       builtin exit 2
     else
diff --git a/lib/devmode.bash b/lib/devmode.bash
index 8a3041b..7f6c35b 100644
--- a/lib/devmode.bash
+++ b/lib/devmode.bash
@@ -28,7 +28,7 @@ function dev_mode {
 
   local hook="$target"/.git/hooks/pre-push
   cat >"$hook" <<EOF
-#!/usr/bin/env bash
+#!/usr/bin/sh
 test/miaou-bash.test.bash
 EOF
   chmod +x "$hook"