diff --git a/drivers/net/s2io.h b/drivers/net/s2io.h
index d23a50f..803137c 100644
--- a/drivers/net/s2io.h
+++ b/drivers/net/s2io.h
@@ -297,6 +297,9 @@
 	struct xpakStat xpak_stat;
 };
 
+/* Default value for 'vlan_strip_tag' configuration parameter */
+#define NO_STRIP_IN_PROMISC 2
+
 /*
  * Structures representing different init time configuration
  * parameters of the NIC.