diff --git a/.gitignore b/.gitignore
index ca77fe1..b290002 100644
--- a/.gitignore
+++ b/.gitignore
@@ -219,4 +219,6 @@ $RECYCLE.BIN/
 # Windows shortcuts
 *.lnk
 
-# End of https://www.toptal.com/developers/gitignore/api/osx,windows,linux,vim,visualstudiocode,go,goland
\ No newline at end of file
+# End of https://www.toptal.com/developers/gitignore/api/osx,windows,linux,vim,visualstudiocode,go,goland
+
+chip8_libretro.h
diff --git a/Makefile b/Makefile
index f6f549c..4b6c98b 100644
--- a/Makefile
+++ b/Makefile
@@ -12,5 +12,5 @@ test:
 	go test -v -race ./chip8
 
 clean: 
-	rm $(LIBRETRO_CORE) $(LIBRETRO_HEADER)
+	rm -f $(LIBRETRO_CORE) $(LIBRETRO_HEADER)
 
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..b380ae4
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,10 @@
+github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=