diff --git a/drivers/net/wireless/ipw2200.c b/drivers/net/wireless/ipw2200.c
index a56d9fc..3d4b590 100644
--- a/drivers/net/wireless/ipw2200.c
+++ b/drivers/net/wireless/ipw2200.c
@@ -10349,9 +10349,7 @@
 					 remaining_bytes,
 					 PCI_DMA_TODEVICE));
 
-			tfd->u.data.num_chunks =
-			    cpu_to_le32(le32_to_cpu(tfd->u.data.num_chunks) +
-					1);
+			le32_add_cpu(&tfd->u.data.num_chunks, 1);
 		}
 	}