diff --git a/Cheat-Sheet.md b/Cheat-Sheet.md
index f04a2c5..806e0e7 100644
--- a/Cheat-Sheet.md
+++ b/Cheat-Sheet.md
@@ -199,12 +199,6 @@ For more performance tips, see [[Performance Tips]].
 
 ```go
 type DrawImageOptions struct {
-    // (This is deprecated as of 1.9.0-alpha. Use (*Image).SubImage instead if you use Ebiten 1.9.0-alpha or later.)
-    //
-    // SourceRect is the region of the source image to draw.
-    // If SourceRect is nil, whole image is used.
-    SourceRect *image.Rectangle
-
     // GeoM is a geometry matrix to draw.
     // The default (zero) value is identify, which draws the image at (0, 0).
     GeoM GeoM