diff --git a/drivers/staging/comedi/drivers/ni_mio_cs.c b/drivers/staging/comedi/drivers/ni_mio_cs.c
index 69a42c5dddc89c6665180eb0400727a0e6bc94e8..f8446849b2eb994875b4bc67d8bd501aa327fa99 100644
--- a/drivers/staging/comedi/drivers/ni_mio_cs.c
+++ b/drivers/staging/comedi/drivers/ni_mio_cs.c
@@ -251,7 +251,7 @@ static void mio_cs_config(struct pcmcia_device *link);
 static void cs_release(struct pcmcia_device *link);
 static void cs_detach(struct pcmcia_device *);
 
-static struct pcmcia_device *cur_dev = NULL;
+static struct pcmcia_device *cur_dev;
 
 static int cs_attach(struct pcmcia_device *link)
 {