diff --git a/88x2bu.sh b/88x2bu.sh
index 313f7ca..ad1098c 100755
--- a/88x2bu.sh
+++ b/88x2bu.sh
@@ -21,7 +21,7 @@ build_(){
     if [ -d "${TEMPDIR}"/88xbu ];then
     	cd "${TEMPDIR}"/88xbu
         make clean
-        make "${1}"
+        make ${1:+"${1}"}
         make install
     else
         echo "${TEMPDIR}/88xbu does not exist"