diff --git a/pixelgl/doc.go b/pixelgl/doc.go
index 6feee33..e28bdfb 100644
--- a/pixelgl/doc.go
+++ b/pixelgl/doc.go
@@ -1,7 +1,7 @@
 // Package pixelgl provides some abstractions around the basic OpenGL primitives and
 // operations.
 //
-// All calls should be wrapped inside pixelgl.Do/DoNoBlock/DoErr/DoVal.
+// All calls should be done from the main thread using "github.com/faiface/mainthread" package.
 //
 // This package deliberately does not handle nor report OpenGL errors, it's up to you to
 // cause none.