diff --git a/docs/resource-guide.md b/docs/resource-guide.md
index e9f84bec..6e3eb94a 100644
--- a/docs/resource-guide.md
+++ b/docs/resource-guide.md
@@ -105,7 +105,7 @@ when parameters take a zero value, whenever this is possible.)
 
 ```golang
 // Default returns some sensible defaults for this resource.
-func (obj *FooRes) Default() Res {
+func (obj *FooRes) Default() engine.Res {
 	return &FooRes{
 		Answer: 42, // sometimes, defaults shouldn't be the zero value
 	}