diff --git a/src/vs/workbench/contrib/files/browser/fileCommands.ts b/src/vs/workbench/contrib/files/browser/fileCommands.ts
index 1311bd1839b..c17a5b80692 100644
--- a/src/vs/workbench/contrib/files/browser/fileCommands.ts
+++ b/src/vs/workbench/contrib/files/browser/fileCommands.ts
@@ -204,8 +204,8 @@ CommandsRegistry.registerCommand({
 
 		if (resources.length === 2) {
 			return editorService.openEditor({
-				original: { resource: resources[1] },
-				modified: { resource: resources[0] },
+				original: { resource: resources[0] },
+				modified: { resource: resources[1] },
 				options: { pinned: true }
 			});
 		}