diff --git a/framebuffer.go b/framebuffer.go
index bf50600..f2f259c 100644
--- a/framebuffer.go
+++ b/framebuffer.go
@@ -104,6 +104,7 @@ func (f *Framebuffer) Init(dev string) {
 
 }
 
+// Release open file
 func (f *Framebuffer) Release() {
 	C.munmap(unsafe.Pointer(&f.Data[0]), C.size_t(f.Screensize))
 	C.close(C.int(f.Fd))