diff --git a/release/install-release.sh b/release/install-release.sh
index 0d3c9e01b..103540578 100755
--- a/release/install-release.sh
+++ b/release/install-release.sh
@@ -145,7 +145,7 @@ getPMT(){
     elif [[ -n `command -v yum` ]]; then
         CMD_INSTALL="yum -y -q install"
         CMD_UPDATE="yum -q makecache"
-    elif [ -n `command -v zypper` ];then
+    elif [[ -n `command -v zypper` ]]; then
         CMD_INSTALL="zypper -y install"
         CMD_UPDATE="zypper ref"
     else