diff --git a/drivers/staging/rtl8192u/r8192U_core.c b/drivers/staging/rtl8192u/r8192U_core.c
index d607c59761cf..532a71364b34 100644
--- a/drivers/staging/rtl8192u/r8192U_core.c
+++ b/drivers/staging/rtl8192u/r8192U_core.c
@@ -5035,7 +5035,7 @@ static void rtl8192_usb_disconnect(struct usb_interface *intf)
 		kfree(priv->pFirmware);
 		priv->pFirmware = NULL;
 		rtl8192_usb_deleteendpoints(dev);
-		mdelay(10);
+		usleep_range(10000, 11000);
 	}
 	free_ieee80211(dev);
 	RT_TRACE(COMP_DOWN, "wlan driver removed\n");