diff --git a/aarch64_build_kit.sh b/aarch64_build_kit.sh
index 7ed648d0c59d3befd09bf49d8f26567ccc2371b2..91a9f51cae5cd0cd6f0bc7c1701791835dbf73f0 100755
--- a/aarch64_build_kit.sh
+++ b/aarch64_build_kit.sh
@@ -35,7 +35,8 @@ prepare_work_dir() {
             ln -s "${_SOURCE}/$1/$f" "${_BUILD}/$1/${_WORK_DIR}/$(basename $f)"
         fi
     done
-    cp -a ${_BUILD}/$1/*.xz "${_BUILD}/$1/${_WORK_DIR}/"
+    [[ $(ls ${_BUILD}/$1/ | grep .xz) ]] && cp -a ${_BUILD}/$1/*.xz \
+                                                  ${_BUILD}/$1/${_WORK_DIR}/
 }
 
 fix_default() {