diff --git a/build.sh b/build.sh
index 3989e0e2b4..d81164353c 100755
--- a/build.sh
+++ b/build.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 if test `uname` = Darwin; then
     cachedir=~/Library/Caches/KBuild