diff --git a/build.sh b/build.sh
index 7c94d1125..8e6b51346 100755
--- a/build.sh
+++ b/build.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 TOPDIR=`readlink -f \`dirname $0\``
 BUILD_SH=$TOPDIR/build.sh