diff --git a/external-crates/move/tooling/prettier-extension/src/extension.js b/external-crates/move/tooling/prettier-extension/src/extension.js
index a43b827f2eb86..fd3f931baae6c 100644
--- a/external-crates/move/tooling/prettier-extension/src/extension.js
+++ b/external-crates/move/tooling/prettier-extension/src/extension.js
@@ -76,7 +76,20 @@ function activate(context) {
  * - Prettier extension settings
  */
 async function findMatchingConfig(documentUri) {
-	const root = vscode.workspace.getWorkspaceFolder(documentUri).uri.path;
+	const workspaceFolder = vscode.workspace.getWorkspaceFolder(documentUri);
+	if (!workspaceFolder) {
+		const formatterConfig = vscode.workspace.getConfiguration(EXTENSION_NAME);
+		return {
+			tabWidth: formatterConfig.get('tabWidth'),
+			printWidth: formatterConfig.get('printWidth'),
+			wrapComments: formatterConfig.get('wrapComments'),
+			useModuleLabel: formatterConfig.get('useModuleLabel'),
+			autoGroupImports: formatterConfig.get('autoGroupImports'),
+			enableErrorDebug: formatterConfig.get('errorDebugMode'),
+		};
+	}
+
+	const root = workspaceFolder.uri.path;
 	let lookup = documentUri.path;
 	let search = {};