diff --git a/drivers/net/bnx2x.h b/drivers/net/bnx2x.h
index 185a6ba..c3b32f7 100644
--- a/drivers/net/bnx2x.h
+++ b/drivers/net/bnx2x.h
@@ -1023,6 +1023,9 @@
 	/* used to synchronize dmae accesses */
 	struct mutex		dmae_mutex;
 
+	/* used to protect the FW mail box */
+	struct mutex		fw_mb_mutex;
+
 	/* used to synchronize stats collecting */
 	int			stats_state;
 	/* used by dmae command loader */