diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c
index f861199..5dce797 100644
--- a/drivers/usb/misc/legousbtower.c
+++ b/drivers/usb/misc/legousbtower.c
@@ -317,12 +317,8 @@
 	tower_abort_transfers (dev);
 
 	/* free data structures */
-	if (dev->interrupt_in_urb != NULL) {
-		usb_free_urb (dev->interrupt_in_urb);
-	}
-	if (dev->interrupt_out_urb != NULL) {
-		usb_free_urb (dev->interrupt_out_urb);
-	}
+	usb_free_urb(dev->interrupt_in_urb);
+	usb_free_urb(dev->interrupt_out_urb);
 	kfree (dev->read_buffer);
 	kfree (dev->interrupt_in_buffer);
 	kfree (dev->interrupt_out_buffer);
@@ -502,15 +498,11 @@
 	if (dev->interrupt_in_running) {
 		dev->interrupt_in_running = 0;
 		mb();
-		if (dev->interrupt_in_urb != NULL && dev->udev) {
+		if (dev->udev)
 			usb_kill_urb (dev->interrupt_in_urb);
-		}
 	}
-	if (dev->interrupt_out_busy) {
-		if (dev->interrupt_out_urb != NULL && dev->udev) {
-			usb_kill_urb (dev->interrupt_out_urb);
-		}
-	}
+	if (dev->interrupt_out_busy && dev->udev)
+		usb_kill_urb(dev->interrupt_out_urb);
 
 exit:
 	dbg(2, "%s: leave", __FUNCTION__);