diff --git a/docs/api/map_geometry.md b/docs/api/map_geometry.md
index dcde5e1cb..009ae45f3 100644
--- a/docs/api/map_geometry.md
+++ b/docs/api/map_geometry.md
@@ -1 +1,3 @@
+A data structure returned by [screen.find_widget][textual.screen.Screen.find_widget].
+
 ::: textual._compositor.MapGeometry