diff --git a/ospfd/ospf_te.c b/ospfd/ospf_te.c
index 24e8105..587564a 100644
--- a/ospfd/ospf_te.c
+++ b/ospfd/ospf_te.c
@@ -205,7 +205,7 @@
 {
   static u_int32_t seqno = 0;
 
-  if (LEGAL_TE_INSTANCE_RANGE (seqno + 1))
+  if (seqno < MAX_LEGAL_TE_INSTANCE_NUM )
     seqno += 1;
   else
     seqno  = 1; /* Avoid zero. */
diff --git a/ospfd/ospf_te.h b/ospfd/ospf_te.h
index e8511cd..863d8ba 100644
--- a/ospfd/ospf_te.h
+++ b/ospfd/ospf_te.h
@@ -41,7 +41,7 @@
  *
  */
 
-#define	LEGAL_TE_INSTANCE_RANGE(i)	(0 <= (i) && (i) <= 0xffff)
+#define	MAX_LEGAL_TE_INSTANCE_NUM (0xffff)
 
 /*
  *        24       16        8        0