diff --git a/src/others/xml/lv_xml_update.h b/src/others/xml/lv_xml_update.h
index 5417cd1bb2..10eac5da7c 100644
--- a/src/others/xml/lv_xml_update.h
+++ b/src/others/xml/lv_xml_update.h
@@ -25,8 +25,10 @@ extern "C" {
  **********************/
 
 /**
- * Load the styles, constants, another data of the component. It needs to be called only once for each component.
- * @param xml_def   the XML definition of the component as a NULL terminated string
+ * Change the properties of a given widget by processing XML snippets.
+ * For example `<lv_slider name="my_slider_1" min_value="30" "style_bg_color="0xff0000"/>`
+ * Note that the tag should be the underlying widget's name and the component's name.
+ * @param xml_def   the XML to process as a string
  * @return          LV_RESULT_OK: loaded successfully, LV_RES_INVALID: otherwise
  */
 lv_result_t lv_xml_update_from_data(const char * xml_def);