diff --git a/packages/electron-updater/src/differentialDownloader/ProgressDifferentialDownloadCallbackTransform.ts b/packages/electron-updater/src/differentialDownloader/ProgressDifferentialDownloadCallbackTransform.ts
index 9b143108433..1729131eb1e 100644
--- a/packages/electron-updater/src/differentialDownloader/ProgressDifferentialDownloadCallbackTransform.ts
+++ b/packages/electron-updater/src/differentialDownloader/ProgressDifferentialDownloadCallbackTransform.ts
@@ -14,7 +14,7 @@ export interface ProgressInfo {
 }
 
 export interface ProgressDifferentialDownloadInfo {
-  expectedByteCounts: Array<number>,
+  expectedByteCounts: Array<number>
   grandTotal: number
 }