diff --git a/packages/web/src/forms/FormArgument.svelte b/packages/web/src/forms/FormArgument.svelte
index 1fa74f708..8f21fc297 100644
--- a/packages/web/src/forms/FormArgument.svelte
+++ b/packages/web/src/forms/FormArgument.svelte
@@ -22,6 +22,7 @@
     label={arg.label}
     isNative
     {name}
+    defaultValue={arg.default}
     options={arg.options.map(opt =>
       _.isString(opt) ? { label: opt, value: opt } : { label: opt.name, value: opt.value }
     )}