diff --git a/src/compiler/compile/render_dom/wrappers/EachBlock.ts b/src/compiler/compile/render_dom/wrappers/EachBlock.ts
index d73d6dcffd..a6ee015d35 100644
--- a/src/compiler/compile/render_dom/wrappers/EachBlock.ts
+++ b/src/compiler/compile/render_dom/wrappers/EachBlock.ts
@@ -539,7 +539,7 @@ export default class EachBlockWrapper extends Wrapper {
 			// We declare `i` as block scoped here, as the `remove_old_blocks` code
 			// may rely on continuing where this iteration stopped.
 			const update = b`
-				${!this.block.has_update_method && `const #old_length = ${this.vars.each_block_value}.length;`}
+				${!this.block.has_update_method && b`const #old_length = ${this.vars.each_block_value}.length;`}
 				${this.vars.each_block_value} = ${snippet};
 
 				let #i;
diff --git a/test/runtime/samples/transition-js-nested-each/_config.js b/test/runtime/samples/transition-js-nested-each/_config.js
index 3d2fe3c32e..c21024dd69 100644
--- a/test/runtime/samples/transition-js-nested-each/_config.js
+++ b/test/runtime/samples/transition-js-nested-each/_config.js
@@ -4,7 +4,7 @@ export default {
 		things: ['a']
 	},
 
-	test({ assert, component, target, window, raf }) {
+	test({ assert, component, target, raf }) {
 		component.x = true;
 
 		const div = target.querySelector('div');