diff --git a/image_to_vm.sh b/image_to_vm.sh
index 49319ea58b..d61c3515a4 100755
--- a/image_to_vm.sh
+++ b/image_to_vm.sh
@@ -44,6 +44,8 @@ DEFINE_boolean getbinpkg "${FLAGS_FALSE}" \
   "Download binary packages from remote repository."
 DEFINE_string getbinpkgver "" \
   "Use binary packages from a specific version."
+DEFINE_integer jobs "${NUM_JOBS}" \
+  "How many packages to build in parallel at maximum."
 
 # include upload options
 . "${BUILD_LIBRARY_DIR}/release_util.sh" || exit 1