diff --git a/extensions/emmet/src/util.ts b/extensions/emmet/src/util.ts
index e81d25bae3b..ee45de467e6 100644
--- a/extensions/emmet/src/util.ts
+++ b/extensions/emmet/src/util.ts
@@ -226,7 +226,7 @@ export function parsePartialStylesheet(document: vscode.TextDocument, position:
 	}
 
 	function consumeBlockCommentBackwards() {
-		if (stream.peek() === slash) {
+		if (!stream.sof() && stream.peek() === slash) {
 			if (stream.backUp(1) === star) {
 				stream.pos = findOpeningCommentBeforePosition(stream.pos) ?? startOffset;
 			} else {