diff --git a/contrib/tsn/model/frer-vector-recovery-function.cc b/contrib/tsn/model/frer-vector-recovery-function.cc
index 036a2f6..89f68ec 100644
--- a/contrib/tsn/model/frer-vector-recovery-function.cc
+++ b/contrib/tsn/model/frer-vector-recovery-function.cc
@@ -75,7 +75,7 @@ VectorRecoveryFunction::DoRecovery(uint16_t seqNumber)
 
     return true;
   }
-  else if (delta >= m_frerSeqRcvyHistoryLenght || delta <= -m_frerSeqRcvyHistoryLenght)
+  else if (delta > m_frerSeqRcvyHistoryLenght || delta <= -m_frerSeqRcvyHistoryLenght)
   {
     // Packet is out-of-range. Count and discard it.
     m_frerCpsSeqRcvyRoguePackets += 1;