diff --git a/src/api/assets.js b/src/api/assets.js
index 30bd996..abdda7a 100644
--- a/src/api/assets.js
+++ b/src/api/assets.js
@@ -229,9 +229,10 @@ export const ASSET_ASSIGN_ACTIVITY_ID = 'd18815a4-4e74-480d-a943-67dce894412f'
 /** Fields the user fills in. */
 export const ASSET_ASSIGN_FIELDS = [
   { id: 'field_1', label: 'Assigned date', type: 'date' },
-  // The builder has no options for Assigned by, so the form offers the active
-  // employees' names (`employeeOptions`, filled in by the dialog).
-  { id: 'field_5', label: 'Assigned by', type: 'select', options: [], employeeOptions: true },
+  // Assigned by (field_5) is left out of the form on purpose: it is a select in
+  // the builder and the runtime rejects any value not in its options ("Assigned
+  // by must be one of the listed options"), so employee names can't go there.
+  // Add it back, with `employeeOptions: true`, once the builder field is text.
   { id: 'field_6', label: 'Remarks', type: 'longtext' },
   {
     id: 'field_21',