diff --git a/scripts/unpack b/scripts/unpack
index 673fc4f08f..1c5876c862 100755
--- a/scripts/unpack
+++ b/scripts/unpack
@@ -66,10 +66,10 @@ if [ -d "${SOURCES}/${PKG_NAME}" -o -d "${PKG_DIR}/sources" ]; then
   pkg_call_exists pre_unpack && pkg_call pre_unpack
 
   if pkg_call_exists unpack; then
-    (
-      PKG_BUILD="${PKG_UNPACK_DIR}/${PKG_NAME}-${PKG_VERSION}"
-      pkg_call unpack
-    )
+    PKG_BUILD_ORIG="${PKG_BUILD}"
+    PKG_BUILD="${PKG_UNPACK_DIR}/${PKG_NAME}-${PKG_VERSION}"
+    pkg_call unpack
+    PKG_BUILD="${PKG_BUILD_ORIG}"
   else
     if [ -n "${PKG_URL}" ]; then
       ${SCRIPTS}/extract "${PKG_NAME}" "${PKG_UNPACK_DIR}"