diff --git a/include/linux/pnp.h b/include/linux/pnp.h
index 29dd55838e84c5e4c13f681473859eeb8dccdf30..b2f05c230f4b8db61984950489173980c003178a 100644
--- a/include/linux/pnp.h
+++ b/include/linux/pnp.h
@@ -175,7 +175,7 @@ static inline void pnp_set_card_drvdata(struct pnp_card_link *pcard, void *data)
 struct pnp_dev {
 	struct device dev;		/* Driver Model device interface */
 	u64 dma_mask;
-	unsigned char number;		/* used as an index, must be unique */
+	unsigned int number;		/* used as an index, must be unique */
 	int status;
 
 	struct list_head global_list;	/* node in global list of devices */