diff --git a/build.sh b/build.sh
index 524e475d58..09b54621f4 100755
--- a/build.sh
+++ b/build.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 if test `uname` = Darwin; then
     cachedir=~/Library/Caches/KBuild