diff --git a/extensions/markdown-language-features/preview-src/scroll-sync.ts b/extensions/markdown-language-features/preview-src/scroll-sync.ts
index fe79470f329..c968452eae5 100644
--- a/extensions/markdown-language-features/preview-src/scroll-sync.ts
+++ b/extensions/markdown-language-features/preview-src/scroll-sync.ts
@@ -19,7 +19,7 @@ const getCodeLineElements = (() => {
 	return (documentVersion: number) => {
 		if (!cachedElements || documentVersion !== cachedVersion) {
 			cachedVersion = documentVersion;
-			cachedElements = [{ element: document.body, line: 0 }];
+			cachedElements = [{ element: document.body, line: -1 }];
 			for (const element of document.getElementsByClassName(codeLineClass)) {
 				const line = +element.getAttribute('data-line')!;
 				if (isNaN(line)) {