diff --git a/vscode-lean4/src/utils/clientProvider.ts b/vscode-lean4/src/utils/clientProvider.ts
index cea8611b9..d6591a0a7 100644
--- a/vscode-lean4/src/utils/clientProvider.ts
+++ b/vscode-lean4/src/utils/clientProvider.ts
@@ -198,9 +198,9 @@ export class LeanClientProvider implements Disposable {
                 return
             }
 
-            await this.checkIsValidProjectFolder(client.folderUri)
-
             await client.openLean4Document(document)
+
+            await this.checkIsValidProjectFolder(client.folderUri)
         } catch (e) {
             logger.log(`[ClientProvider] ### Error opening document: ${e}`);
         }