diff --git a/docs/src/walk_through.md b/docs/src/walk_through.md
index bf23404..224b7e2 100644
--- a/docs/src/walk_through.md
+++ b/docs/src/walk_through.md
@@ -160,3 +160,5 @@ Both TMLE and OSE asymptotically follow a Normal distribution. It means we can p
 ```@example walk-through
 OneSampleTTest(result)
 ```
+
+If the estimate is high-dimensional, a `OneSampleHotellingT2Test` should be performed instead. Alternatively, the `significance_test` function will automatically select the appropriate test for the estimate and return its result.