diff --git a/extensions/markdown/src/extension.ts b/extensions/markdown/src/extension.ts
index c4105244a3966252bc820bbd073af5234d7e3ccb..1cc6f8b1ac790702b2d2fce70a824cc7ae90594d 100644
--- a/extensions/markdown/src/extension.ts
+++ b/extensions/markdown/src/extension.ts
@@ -49,8 +49,9 @@ export function activate(context: ExtensionContext) {
 	});
 
 	vscode.workspace.onDidChangeConfiguration(() => {
-		vscode.workspace.textDocuments.forEach((document) => {
-			if (isMarkdownFile) {
+		vscode.workspace.textDocuments.forEach(document => {
+			if (document.uri.scheme === 'markdown') {
+				// update all generated md documents
 				provider.update(document.uri);
 			}
 		});