diff --git a/src/vs/workbench/contrib/terminal/browser/xterm-private.d.ts b/src/vs/workbench/contrib/terminal/browser/xterm-private.d.ts
index 5f1b20f42db..b3fc1aa3bc2 100644
--- a/src/vs/workbench/contrib/terminal/browser/xterm-private.d.ts
+++ b/src/vs/workbench/contrib/terminal/browser/xterm-private.d.ts
@@ -14,7 +14,6 @@ export interface IXtermCore {
 		readonly scrollBarWidth: number;
 		_innerRefresh(): void;
 	};
-	_onKey: IEventEmitter<{ key: string }>;
 
 	_charSizeService: {
 		width: number;