diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
index 99c8f09..7666540 100644
--- a/drivers/net/xen-netback/netback.c
+++ b/drivers/net/xen-netback/netback.c
@@ -956,7 +956,7 @@
 	if (unlikely(err)) {
 		if (net_ratelimit())
 			netdev_dbg(vif->dev,
-				   "Grant copy of header failed! status: %d pending_idx% %u ref: %u\n",
+				   "Grant copy of header failed! status: %d pending_idx: %u ref: %u\n",
 				   (*gopp_copy)->status,
 				   pending_idx,
 				   (*gopp_copy)->source.u.ref);
@@ -985,7 +985,7 @@
 		/* Error on this fragment: respond to client with an error. */
 		if (net_ratelimit())
 			netdev_dbg(vif->dev,
-				   "Grant map of %d. frag failed! status: %d pending_idx% %u ref: %u\n",
+				   "Grant map of %d. frag failed! status: %d pending_idx: %u ref: %u\n",
 				   i,
 				   gop_map->status,
 				   pending_idx,