diff --git a/packages/svelte/src/internal/client/runtime.js b/packages/svelte/src/internal/client/runtime.js
index ffd61ed776..52b24030fa 100644
--- a/packages/svelte/src/internal/client/runtime.js
+++ b/packages/svelte/src/internal/client/runtime.js
@@ -370,7 +370,7 @@ function remove_reaction(signal, dependency) {
 		// allows us to skip the expensive work of disconnecting and immediately reconnecting it
 		(new_deps === null || !new_deps.includes(dependency))
 	) {
-		const derived = /** @type {Derived} */ (dependency);
+		var derived = /** @type {Derived} */ (dependency);
 
 		// If we are working with a derived that is owned by an effect, then mark it as being
 		// disconnected and remove the mark flag, as it cannot be reliably removed otherwise