diff --git a/app/flatpak-builtins-build.c b/app/flatpak-builtins-build.c
index 8da0de81..07ef6fc0 100644
--- a/app/flatpak-builtins-build.c
+++ b/app/flatpak-builtins-build.c
@@ -569,6 +569,8 @@ flatpak_builtin_build (int argc, char **argv, GCancellable *cancellable, GError
                               NULL);
     }
 
+  flatpak_bwrap_envp_to_args (bwrap);
+
   if (!flatpak_bwrap_bundle_args (bwrap, 1, -1, FALSE, error))
     return FALSE;