--- a/src/network/model/buffer.h	Thu Sep 03 23:57:43 2015 +0200
+++ b/src/network/model/buffer.h	Fri Sep 04 01:10:29 2015 +0200
@@ -992,7 +992,7 @@
 Buffer::Iterator::PeekU8 (void)
 {
   NS_ASSERT_MSG (m_current >= m_dataStart &&
-                 m_current <= m_dataEnd,
+                 m_current < m_dataEnd,
                  GetReadErrorMessage ());
 
   if (m_current < m_zeroStart)