diff --git a/src/cpp/ripple/NetworkOPs.cpp b/src/cpp/ripple/NetworkOPs.cpp
index 9db94bcee..9a39d3126 100644
--- a/src/cpp/ripple/NetworkOPs.cpp
+++ b/src/cpp/ripple/NetworkOPs.cpp
@@ -24,6 +24,7 @@
 // there's a functional network.
 
 SETUP_LOG();
+DECLARE_INSTANCE(InfoSub);
 
 NetworkOPs::NetworkOPs(boost::asio::io_service& io_service, LedgerMaster* pLedgerMaster) :
 	mMode(omDISCONNECTED), mNeedNetworkLedger(false), mNetTimer(io_service), mLedgerMaster(pLedgerMaster),
diff --git a/src/cpp/ripple/NetworkOPs.h b/src/cpp/ripple/NetworkOPs.h
index 8e5730df5..4f8accb56 100644
--- a/src/cpp/ripple/NetworkOPs.h
+++ b/src/cpp/ripple/NetworkOPs.h
@@ -20,7 +20,9 @@
 class Peer;
 class LedgerConsensus;
 
-class InfoSub
+DEFINE_INSTANCE(InfoSub);
+
+class InfoSub : public IS_INSTANCE(InfoSub)
 {
 public: