diff --git a/libp2p/Session.cpp b/libp2p/Session.cpp
index e00f56962..8c5a50750 100644
--- a/libp2p/Session.cpp
+++ b/libp2p/Session.cpp
@@ -245,7 +245,7 @@ bool Session::interpret(PacketType _t, RLP const& _r)
 			break;
 		default:
 			for (auto const& i: m_capabilities)
-				if (_t >= i.second->m_idOffset && _t - i.second->m_idOffset < i.second->hostCapability()->messageCount())
+				if (_t >= (int)i.second->m_idOffset && _t - i.second->m_idOffset < i.second->hostCapability()->messageCount())
 				{
 					if (i.second->m_enabled)
 						return i.second->interpret(_t - i.second->m_idOffset, _r);