diff --git a/resources/function_help/json/x b/resources/function_help/json/x
index ccf1d5545bd..1c8b6910ba8 100644
--- a/resources/function_help/json/x
+++ b/resources/function_help/json/x
@@ -3,6 +3,7 @@
   "type": "function",
   "description": "Returns the x coordinate of a point geometry, or the x-coordinate of the centroid for a non-point geometry.",
   "arguments": [ {"arg":"geom","description":"a geometry"}],
-  "examples": [ { "expression":"x( geom_from_wkt( 'POINT(2 5)' ) )", "returns":"2"}
+  "examples": [ { "expression":"x( geom_from_wkt( 'POINT(2 5)' ) )", "returns":"2"},
+  { "expression":"x( $geometry )", "returns":"x coordinate of the current feature's centroid"}
   ]
 }