1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/atm/horizon.h b/drivers/atm/horizon.h
index 4461229f56a5..b48859d0d434 100644
--- a/drivers/atm/horizon.h
+++ b/drivers/atm/horizon.h
@@ -423,7 +423,7 @@ struct hrz_dev {
   wait_queue_head_t   tx_queue;
 
   u8                  irq;
-  long                flags;
+  unsigned long       flags;
   u8                  tx_last;
   u8                  tx_idle;