diff --git a/plugins/php/versions/54/install.sh b/plugins/php/versions/54/install.sh
index ab9baaac1..792ee2a28 100755
--- a/plugins/php/versions/54/install.sh
+++ b/plugins/php/versions/54/install.sh
@@ -9,7 +9,7 @@ serverPath=$(dirname "$rootPath")
 sourcePath=${serverPath}/source
 sysName=`uname`
 install_tmp=${rootPath}/tmp/mw_install.pl
-
+SYS_ARCH=`arch`
 
 version=5.4.45
 PHP_VER=54