diff --git a/config/functions b/config/functions
index cced5cdb50..702346190f 100644
--- a/config/functions
+++ b/config/functions
@@ -714,7 +714,7 @@ get_pkg_variable() {
 
 # get package's build dir
 get_build_dir() {
-  local _PKG_NAME="$(get_pkg_variable "$1" PKG_NAME)" _PKG_VERSION="$(get_pkg_version "$1")"
+  local _PKG_NAME="${1%:*}" _PKG_VERSION="$(get_pkg_version "$1")"
   if [ -n "$_PKG_NAME" -a -n "$_PKG_VERSION" ]; then
     echo $BUILD/${_PKG_NAME}-${_PKG_VERSION}
   fi