diff --git a/epan/dissectors/packet-ethertype.c b/epan/dissectors/packet-ethertype.c
index c4147708b6..5b534acf95 100644
--- a/epan/dissectors/packet-ethertype.c
+++ b/epan/dissectors/packet-ethertype.c
@@ -105,6 +105,7 @@ const value_string etype_vals[] = {
   { ETHERTYPE_CGMP, "Cisco Group Management Protocol" },
   { ETHERTYPE_MSRP, "802.1Qat Multiple Stream Reservation Protocol" },
   { ETHERTYPE_AVBTP, "IEEE 1722 Audio Video Bridging Transport Protocol" },
+  { ETHERTYPE_GIGAMON, "Gigamon Header" },
   { ETHERTYPE_MAC_CONTROL, "MAC Control" },
   { ETHERTYPE_SLOW_PROTOCOLS, "Slow Protocols" },
   { ETHERTYPE_RTMAC, "Real-Time Media Access Control" },
diff --git a/epan/etypes.h b/epan/etypes.h
index a25619c072..5fb5590f92 100644
--- a/epan/etypes.h
+++ b/epan/etypes.h
@@ -111,6 +111,10 @@
 #define ETHERTYPE_AVBTP			0x22F0
 #endif
 
+#ifndef ETHERTYPE_GIGAMON
+#define ETHERTYPE_GIGAMON	0x22e5 /* Gigamon Header */
+#endif
+
 #ifndef ETHERTYPE_CENTRINO_PROMISC
 #define ETHERTYPE_CENTRINO_PROMISC	0x2452	/* Intel Centrino promiscuous packets */
 #endif