diff --git a/packaging/centos63/package.sh b/packaging/centos63/package.sh
index d239d2e5a7b..6de66e6bd36 100755
--- a/packaging/centos63/package.sh
+++ b/packaging/centos63/package.sh
@@ -132,6 +132,10 @@ elif [ $# -gt 0 ] ; then
         esac
     done
 
+    if [ -z "${os+xxx}" ]; then
+        echo "Setting os to default"
+        os="default"
+    fi
     echo "Passed OS = $os and packageval = $packageval"
     packaging $os $packageval
 else