diff --git a/p4src/headers.p4 b/p4src/headers.p4
index 5abaf88..b6c30f4 100644
--- a/p4src/headers.p4
+++ b/p4src/headers.p4
@@ -4,12 +4,19 @@
 
 #include <core.p4>
 
+/**************************************** NetPFGA    ****************************************/
+
+/* already defined in sume_switch.p4 */
+#ifndef _SUME_SWITCH_P4_
+typedef bit<9>   port_t;
+#endif
+
 /**************************************** types    ****************************************/
 
 typedef bit<48>  mac_addr_t;
 typedef bit<32>  ipv4_addr_t;
 typedef bit<128> ipv6_addr_t;
-typedef bit<9>   port_t;
+
 typedef bit<16>  mcast_t;
 typedef bit<16>  task_t;
 typedef bit<16>  table_t; /* to map debug messages - 16 bit to match shortenumfield */