diff --git a/drivers/staging/hv/hyperv.h b/drivers/staging/hv/hyperv.h
index 91e557b2fd18..76e2ddd437d9 100644
--- a/drivers/staging/hv/hyperv.h
+++ b/drivers/staging/hv/hyperv.h
@@ -827,9 +827,6 @@ struct hv_device {
 	struct device device;
 
 	struct vmbus_channel *channel;
-
-	/* Device extension; */
-	void *ext;
 };