diff --git a/AUTHORS b/AUTHORS
index d43d9043ed5..d8b6e9d10d8 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -76,6 +76,7 @@ Hao Zheng               hzheng@nicira.com
 Helmut Schaa            helmut.schaa@googlemail.com
 Huanle Han              hanxueluo@gmail.com
 Ian Campbell            Ian.Campbell@citrix.com
+Ian Stokes              ian.stokes@intel.com
 Isaku Yamahata          yamahata@valinux.co.jp
 James P.                roampune@gmail.com
 James Page              james.page@ubuntu.com
@@ -271,7 +272,6 @@ Henrik Amren            henrik@nicira.com
 Hiroshi Tanaka          htanaka@nicira.com
 Hiroshi Miyata          miyahiro.dazu@gmail.com
 Hyojoon Kim             joonk@gatech.edu
-Ian Stokes              ian.stokes@intel.com
 Igor Ganichev           iganichev@nicira.com
 Igor Sever              igor@xorops.com
 Jacob Cherkas           jcherkas@nicira.com
diff --git a/vswitchd/bridge.c b/vswitchd/bridge.c
index f8aaa2c7918..f3b13bd5af9 100644
--- a/vswitchd/bridge.c
+++ b/vswitchd/bridge.c
@@ -3100,6 +3100,7 @@ qos_unixctl_show(struct unixctl_conn *conn, int argc OVS_UNUSED,
     struct iface *iface;
     const char *type;
     struct smap_node *node;
+    int error;
 
     iface = iface_find(argv[1]);
     if (!iface) {
@@ -3107,28 +3108,33 @@ qos_unixctl_show(struct unixctl_conn *conn, int argc OVS_UNUSED,
         return;
     }
 
-    netdev_get_qos(iface->netdev, &type, &smap);
+    error = netdev_get_qos(iface->netdev, &type, &smap);
+    if (!error) {
+        if (*type != '\0') {
+            struct netdev_queue_dump dump;
+            struct smap details;
+            unsigned int queue_id;
 
-    if (*type != '\0') {
-        struct netdev_queue_dump dump;
-        struct smap details;
-        unsigned int queue_id;
+            ds_put_format(&ds, "QoS: %s %s\n", iface->name, type);
 
-        ds_put_format(&ds, "QoS: %s %s\n", iface->name, type);
+            SMAP_FOR_EACH (node, &smap) {
+                ds_put_format(&ds, "%s: %s\n", node->key, node->value);
+            }
 
-        SMAP_FOR_EACH (node, &smap) {
-            ds_put_format(&ds, "%s: %s\n", node->key, node->value);
-        }
+            smap_init(&details);
+            NETDEV_QUEUE_FOR_EACH (&queue_id, &details, &dump, iface->netdev) {
+                qos_unixctl_show_queue(queue_id, &details, iface, &ds);
+            }
+            smap_destroy(&details);
 
-        smap_init(&details);
-        NETDEV_QUEUE_FOR_EACH (&queue_id, &details, &dump, iface->netdev) {
-            qos_unixctl_show_queue(queue_id, &details, iface, &ds);
+            unixctl_command_reply(conn, ds_cstr(&ds));
+        } else {
+            ds_put_format(&ds, "QoS not configured on %s\n", iface->name);
+            unixctl_command_reply_error(conn, ds_cstr(&ds));
         }
-        smap_destroy(&details);
-
-        unixctl_command_reply(conn, ds_cstr(&ds));
     } else {
-        ds_put_format(&ds, "QoS not configured on %s\n", iface->name);
+        ds_put_format(&ds, "%s: failed to retrieve QOS configuration (%s)\n",
+                      iface->name, ovs_strerror(error));
         unixctl_command_reply_error(conn, ds_cstr(&ds));
     }