diff --git a/pkg/worker/thread/mainthread_darwin.go b/pkg/worker/thread/mainthread_darwin.go
index 2779ffa46..f3b5b670d 100644
--- a/pkg/worker/thread/mainthread_darwin.go
+++ b/pkg/worker/thread/mainthread_darwin.go
@@ -51,5 +51,5 @@ func Call(f func()) {
 }
 
 func Switch(s bool) {
-	graphics = s
+	isGraphics = s
 }