diff --git a/content/features/extend.md b/content/features/extend.md
index ffcf55d..ebfd12e 100644
--- a/content/features/extend.md
+++ b/content/features/extend.md
@@ -333,24 +333,30 @@ Both of the above examples compile into:
 }
 ```
 
-However, `:extend` attached to an interpolated selector works:
+However, `:extend` can be attached to an interpolated selector using the nested `&:extend` form:
 
 ```less
 .bucket {
   color: blue;
 }
-@{variable}:extend(.bucket) {}
+@{variable} {
+  &:extend(.bucket);
+}
 @variable: .selector;
 ```
 
 compiles to:
 
-```less
-.bucket, .selector {
+```css
+.bucket,
+.selector {
   color: blue;
 }
 ```
 
+> Note: `@{variable}:extend(.bucket) {}` does not currently extend the interpolated selector. Use the nested `&:extend` form shown above.
+
+
 ### Scoping / Extend Inside @media
 
 Currently, an `:extend` inside a `@media` declaration will only match selectors inside the same media declaration: