diff --git a/src/vs/workbench/browser/parts/editor/editorActions.ts b/src/vs/workbench/browser/parts/editor/editorActions.ts
index 0f9a6e127e0d6db2a14ae445d77dac84a427d93a..7b796486b82a76c52a8e38ac1edce73cfbabe787 100644
--- a/src/vs/workbench/browser/parts/editor/editorActions.ts
+++ b/src/vs/workbench/browser/parts/editor/editorActions.ts
@@ -66,6 +66,7 @@ export class SplitEditorAction extends Action {
 				else if (activeEditor.position === Position.LEFT) {
 					let options = new TextEditorOptions();
 					options.preserveFocus = true;
+					options.pinned = true;
 
 					return this.editorService.openEditor(activeEditor.input, options, Position.RIGHT).then(() => {
 						this.editorService.moveGroup(Position.RIGHT, Position.CENTER);