diff --git a/src/lib/GoogleSpreadsheetWorksheet.ts b/src/lib/GoogleSpreadsheetWorksheet.ts
index 0160b3e..176dbf7 100644
--- a/src/lib/GoogleSpreadsheetWorksheet.ts
+++ b/src/lib/GoogleSpreadsheetWorksheet.ts
@@ -346,10 +346,10 @@ export class GoogleSpreadsheetWorksheet {
   async loadHeaderRow(headerRowIndex?: number) {
     if (headerRowIndex !== undefined) this._headerRowIndex = headerRowIndex;
     const rows = await this.getCellsInRange(this._headerRange);
-    await this._processHeaderRow(rows);
+    this._processHeaderRow(rows);
   }
 
-  private async _processHeaderRow(rows: any[]) {
+  private _processHeaderRow(rows: any[]) {
     if (!rows) {
       throw new Error('No values in the header row - fill the first row with header values before trying to interact with rows');
     }
diff --git a/src/test/manage.test.ts b/src/test/manage.test.ts
index c65a7b0..a63e741 100644
--- a/src/test/manage.test.ts
+++ b/src/test/manage.test.ts
@@ -194,7 +194,7 @@ describe('Managing doc info and sheets', () => {
     let sheet: GoogleSpreadsheetWorksheet;
 
     beforeAll(async () => {
-      sheet = await doc.addSheet({ title: 'validation rules test' });
+      sheet = await doc.addSheet({ title: `validation rules test ${+new Date()}` });
     });
     afterAll(async () => {
       await sheet.delete();