diff --git a/doc/docs.md b/doc/docs.md
index 9c42270940..607d424ffe 100644
--- a/doc/docs.md
+++ b/doc/docs.md
@@ -2161,9 +2161,9 @@ fn bar() {
 [typedef]
 struct C.Foo { }
 
-// Declare a function with WINAPI
+// Used in Win32 API code when you need to pass callback function
 [windows_stdcall]
-fn C.WinFunction()
+fn C.DefWindowProc(hwnd int, msg int, lparam int, wparam int)
 ```