diff --git a/src/chrome/chromeDebugAdapter.ts b/src/chrome/chromeDebugAdapter.ts
index 4b5fe3565..303054838 100644
--- a/src/chrome/chromeDebugAdapter.ts
+++ b/src/chrome/chromeDebugAdapter.ts
@@ -218,6 +218,7 @@ export abstract class ChromeDebugAdapter implements IDebugAdapter {
         logger.setMinLogLevel(minLogLevel);
 
         this._launchAttachArgs = args;
+        args.sourceMaps = typeof args.sourceMaps === 'undefined' || args.sourceMaps;
     }
 
     public shutdown(): void {