diff --git a/go.mod b/go.mod
index 8175c3e..49826a0 100644
--- a/go.mod
+++ b/go.mod
@@ -2,7 +2,7 @@ module github.com/goplus/MazePlay
 
 go 1.18
 
-require github.com/goplus/spx v1.1.0
+require github.com/goplus/spx v1.1.0 //gop:class
 
 require (
 	github.com/ajstarks/svgo v0.0.0-20210927141636-6d70534b1098 // indirect
diff --git a/gop.mod b/gop.mod
deleted file mode 100644
index 10e8640..0000000
--- a/gop.mod
+++ /dev/null
@@ -1,3 +0,0 @@
-gop 1.3
-project .spx Game github.com/goplus/spx
-class .spx SpriteImpl