diff --git a/packages/svelte/src/internal/client/custom-renderer/state.js b/packages/svelte/src/internal/client/custom-renderer/state.js
index 26f1acee96..b14eb48895 100644
--- a/packages/svelte/src/internal/client/custom-renderer/state.js
+++ b/packages/svelte/src/internal/client/custom-renderer/state.js
@@ -20,6 +20,7 @@ export function set_renderer(value) {
  */
 export function push_renderer(value) {
 	var previous_hydrating = hydrating;
+	// this is to allow hydration code to treeshake
 	if (hydrating) {
 		set_hydrating(false);
 	}