diff --git a/config/functions b/config/functions
index e5b9ec9822..3d2d5b6b49 100644
--- a/config/functions
+++ b/config/functions
@@ -775,6 +775,7 @@ load_build_config() {
 
 save_build_config() {
   local var
+  mkdir -p ${BUILD}
   rm -f ${BUILD}/.build.conf
   for var in PROJECT DEVICE ARCH DEBUG BUILD_SUFFIX; do
     echo "export ${var}=\"${!var}\"" >> ${BUILD}/.build.conf