diff --git a/src/internet/model/udp-socket-impl.cc b/src/internet/model/udp-socket-impl.cc
index b5779fb9f..8a5eb225a 100644
--- a/src/internet/model/udp-socket-impl.cc
+++ b/src/internet/model/udp-socket-impl.cc
@@ -547,6 +547,9 @@ UdpSocketImpl::RecvFrom (uint32_t maxSize, uint32_t flags,
       bool found;
       found = packet->PeekPacketTag (tag);
       NS_ASSERT (found);
+      //cast found to void, to suppress 'found' set but not used,compiler warning
+      //in optimized builds
+      (void) found;
       fromAddress = tag.GetAddress ();
     }
   return packet;