diff --git a/src/vs/platform/windows/electron-main/windowsMainService.ts b/src/vs/platform/windows/electron-main/windowsMainService.ts
index d0b62c048bd8affd67089422e0014d225fb69b6e..fdf7f2e890b6f1e3774146863abada82323232b1 100644
--- a/src/vs/platform/windows/electron-main/windowsMainService.ts
+++ b/src/vs/platform/windows/electron-main/windowsMainService.ts
@@ -496,7 +496,8 @@ export class WindowsMainService extends Disposable implements IWindowsMainServic
 
 		// Remember in recent document list (unless this opens for extension development)
 		// Also do not add paths when files are opened for diffing, only if opened individually
-		if (!usedWindows.some(window => window.isExtensionDevelopmentHost) && !(fileInputs?.filesToDiff) && !openConfig.noRecentEntry) {
+		const isDiff = fileInputs && fileInputs.filesToDiff.length > 0;
+		if (!usedWindows.some(window => window.isExtensionDevelopmentHost) && !isDiff && !openConfig.noRecentEntry) {
 			const recents: IRecent[] = [];
 			for (let pathToOpen of pathsToOpen) {
 				if (pathToOpen.workspace) {