diff --git a/daemon/HTTPServer.cpp b/daemon/HTTPServer.cpp
index e9db1c95..d98ae12e 100644
--- a/daemon/HTTPServer.cpp
+++ b/daemon/HTTPServer.cpp
@@ -1016,7 +1016,8 @@ namespace http {
 		auto ssu2Server = i2p::transport::transports.GetSSU2Server ();
 		if (ssu2Server)
 		{
-			auto sessions = ssu2Server->GetSSU2Sessions ();
+			i2p::transport::SSU2Server::SSU2Sessions sessions;
+			ssu2Server->GetSSU2Sessions (sessions).get ();
 			if (!sessions.empty ())
 				ShowTransportSessions (s, sessions, "SSU2");
 		}
diff --git a/libi2pd/SSU2.h b/libi2pd/SSU2.h
index 5729051e..522a23b7 100644
--- a/libi2pd/SSU2.h
+++ b/libi2pd/SSU2.h
@@ -16,6 +16,7 @@
 #include <array>
 #include <mutex>
 #include <random>
+#include <future>
 #include "util.h"
 #include "SSU2Session.h"
 #include "SSU2OutOfSession.h"
@@ -97,6 +98,8 @@ namespace transport
 			bool IsSyncClockFromPeers () const { return m_IsSyncClockFromPeers; };
 			void AdjustTimeOffset (int64_t offset, std::shared_ptr<const i2p::data::IdentityEx> from);
 
+			using SSU2Sessions = std::unordered_map<uint64_t, std::shared_ptr<SSU2Session> >;
+
 			bool AddSession (std::shared_ptr<SSU2Session> session);
 			void RemoveSession (uint64_t connID);
 			void RequestRemoveSession (uint64_t connID);
@@ -188,7 +191,7 @@ namespace transport
 			ReceiveService m_ReceiveService;
 			boost::asio::ip::udp::socket m_SocketV4, m_SocketV6;
 			boost::asio::ip::address m_AddressV4, m_AddressV6;
-			std::unordered_map<uint64_t, std::shared_ptr<SSU2Session> > m_Sessions;
+			SSU2Sessions m_Sessions;
 			std::unordered_map<i2p::data::IdentHash, std::weak_ptr<SSU2Session> > m_SessionsByRouterHash;
 			mutable std::mutex m_SessionsByRouterHashMutex;
 			std::map<boost::asio::ip::udp::endpoint, std::shared_ptr<SSU2Session> > m_PendingOutgoingSessions;
@@ -231,7 +234,11 @@ namespace transport
 		public:
 
 			// for HTTP/I2PControl
-			const decltype(m_Sessions)& GetSSU2Sessions () const { return m_Sessions; };
+			std::future<void> GetSSU2Sessions (SSU2Sessions& sessions)
+			{
+				return boost::asio::post (GetService (),
+					boost::asio::use_future ([this, &sessions]() { sessions = m_Sessions; }));
+			};
 	};
 }
 }
diff --git a/libi2pd/Transports.h b/libi2pd/Transports.h
index bb66db7c..5559edcb 100644
--- a/libi2pd/Transports.h
+++ b/libi2pd/Transports.h
@@ -281,7 +281,7 @@ namespace transport
 
 			// for HTTP only
 			const NTCP2Server * GetNTCP2Server () const { return m_NTCP2Server; };
-			const SSU2Server * GetSSU2Server () const { return m_SSU2Server; };
+			SSU2Server * GetSSU2Server () const { return m_SSU2Server; };
 			const decltype(m_Peers)& GetPeers () const { return m_Peers; };
 	};