diff --git a/src/compile/render-dom/wrappers/AwaitBlock.ts b/src/compile/render-dom/wrappers/AwaitBlock.ts
index bfd3143333..50320ee8b6 100644
--- a/src/compile/render-dom/wrappers/AwaitBlock.ts
+++ b/src/compile/render-dom/wrappers/AwaitBlock.ts
@@ -174,6 +174,9 @@ export default class AwaitBlockWrapper extends Wrapper {
 		block.builders.mount.addBlock(deindent`
 			${info}.block.${hasTransitions ? 'i' : 'm'}(${initialMountNode}, ${info}.anchor = ${anchorNode});
 			${info}.mount = () => ${updateMountNode};
+			if (${info}.anchor == null) {
+				${info}.anchor = ${anchor};
+			}
 		`);
 
 		const conditions = [];