diff --git a/AUTHORS b/AUTHORS
index 29782455780..254095e096f 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -126,6 +126,7 @@ Martino Fornasa         mf@fornasa.it
 Maryam Tahhan           maryam.tahhan@intel.com
 Mehak Mahajan           mmahajan@nicira.com
 Mijo Safradin           mijo@linux.vnet.ibm.com
+Minoru TAKAHASHI        takahashi.minoru7@gmail.com
 Murphy McCauley         murphy.mccauley@gmail.com
 Natasha Gude            natasha@nicira.com
 Neil McKee              neil.mckee@inmon.com
diff --git a/include/openflow/openflow-1.5.h b/include/openflow/openflow-1.5.h
index 4d778181b58..d112f35e859 100644
--- a/include/openflow/openflow-1.5.h
+++ b/include/openflow/openflow-1.5.h
@@ -39,6 +39,13 @@
 
 #include <openflow/openflow-common.h>
 
+/* Body for ofp15_multipart_request of type OFPMP_PORT_DESC. */
+struct ofp15_port_desc_request {
+    ovs_be32 port_no;         /* All ports if OFPP_ANY. */
+    uint8_t pad[4];            /* Align to 64 bits. */
+};
+OFP_ASSERT(sizeof(struct ofp15_port_desc_request) == 8);
+
 /* Group commands */
 enum ofp15_group_mod_command {
     /* Present since OpenFlow 1.1 - 1.4 */