diff --git a/build.sh b/build.sh
index 0a67b40..dd58dc2 100755
--- a/build.sh
+++ b/build.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env sh
 #
 # YKUSH command application build script
 
diff --git a/install.sh b/install.sh
index f55484b..d1e41ef 100755
--- a/install.sh
+++ b/install.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env sh
 
 echo installing ykush command...
 sudo cp -f bin/ykushcmd /usr/bin