diff --git a/doc.go b/doc.go
index bcb3f26c8..9b88de4e0 100644
--- a/doc.go
+++ b/doc.go
@@ -21,7 +21,7 @@
 //
 //         // Write your game's logical update.
 //
-//         if IsDrawingSkipped() {
+//         if ebiten.IsDrawingSkipped() {
 //             // When the game is running slowly, the rendering result
 //             // will not be adopted.
 //             return nil