diff --git a/src/frontend/gui/gui_xml.cpp b/src/frontend/gui/gui_xml.cpp
index 8ddb44947..1cec668e4 100644
--- a/src/frontend/gui/gui_xml.cpp
+++ b/src/frontend/gui/gui_xml.cpp
@@ -263,7 +263,7 @@ static std::shared_ptr<UINode> readTextBox(UiXmlReader& reader, xml::xmlelement
     if (element->has("supplier")) {
         auto supplier = scripting::create_wstring_supplier(
             reader.getEnvironment().getId(),
-            element->attr("consumer").getText(),
+            element->attr("supplier").getText(),
             reader.getFilename()
         );
         textbox->setTextSupplier(supplier);