diff --git a/build.xml b/build.xml
index ffd63fc5e..e11ccc1d7 100644
--- a/build.xml
+++ b/build.xml
@@ -88,7 +88,7 @@
 			</else>
 		</if>
 		<echo message="Installing dependencies..." />
-		<exec executable="php" passthru="false">
+		<exec executable="php" passthru="true" dir="${builddir}/export/${shortversion}">
 			<arg line="${srcdir}/composer.phar install ${composer_extra_params}"/>
 			<!-- arg line="${composer_env} php ${srcdir}/composer.phar install ${composer_extra_params}"/ -->
 		</exec>