diff --git a/src/cpp/ripple/SerializedLedger.cpp b/src/cpp/ripple/SerializedLedger.cpp
index 8f07ec715..b4285dd87 100644
--- a/src/cpp/ripple/SerializedLedger.cpp
+++ b/src/cpp/ripple/SerializedLedger.cpp
@@ -51,7 +51,7 @@ SerializedLedgerEntry::SerializedLedgerEntry(LedgerEntryType type, const uint256
 
 SerializedLedgerEntry::pointer SerializedLedgerEntry::getMutable() const
 {
-	SerializedLedgerEntry::pointer ret = boost::make_shared<SerializedLedgerEntry>(boost::ref(*this));
+	SerializedLedgerEntry::pointer ret = boost::make_shared<SerializedLedgerEntry>(boost::cref(*this));
 	ret->mMutable = true;
 	return ret;
 }