diff --git a/atom/browser/native_window_mac.mm b/atom/browser/native_window_mac.mm
index ec873d2075..ae2ee23943 100644
--- a/atom/browser/native_window_mac.mm
+++ b/atom/browser/native_window_mac.mm
@@ -1045,8 +1045,6 @@ NativeWindowMac::NativeWindowMac(
       web_contents->GetWebContents()->GetRenderViewHost());
 }
 
-NSWindow* currentSheet;
-
 NativeWindowMac::~NativeWindowMac() {
   [NSEvent removeMonitor:wheel_event_monitor_];
   Observe(nullptr);