diff --git a/packages/benchpress/src/webdriver/chrome_driver_extension.ts b/packages/benchpress/src/webdriver/chrome_driver_extension.ts
index d1ceba67b1..c255f2ff33 100644
--- a/packages/benchpress/src/webdriver/chrome_driver_extension.ts
+++ b/packages/benchpress/src/webdriver/chrome_driver_extension.ts
@@ -51,12 +51,12 @@ export class ChromeDriverExtension extends WebDriverExtension {
 
   gc() { return this._driver.executeScript('window.gc()'); }
 
-  timeBegin(name: string): Promise<any> {
+  async timeBegin(name: string): Promise<any> {
     if (this._firstRun) {
       this._firstRun = false;
       // Before the first run, read out the existing performance logs
       // so that the chrome buffer does not fill up.
-      this._driver.logs('performance');
+      await this._driver.logs('performance');
     }
     return this._driver.executeScript(`console.time('${name}');`);
   }