diff --git a/libi2pd/I2NPProtocol.cpp b/libi2pd/I2NPProtocol.cpp
index f1827bf3..045fad8d 100644
--- a/libi2pd/I2NPProtocol.cpp
+++ b/libi2pd/I2NPProtocol.cpp
@@ -560,9 +560,15 @@ namespace i2p
 					if (!m_LastTunnelBuildMessageTimestamp || ts > m_LastTunnelBuildMessageTimestamp + TUNNEL_BUILD_MESSAGES_MIN_INTERVAL)
 					{
 						m_LastTunnelBuildMessageTimestamp = ts;
+						if (m_NumDroppedTunnelBuildMessages > 0)
+						{
+							LogPrint (eLogWarning, "I2NP: ", m_NumDroppedTunnelBuildMessages, " tunnel build messages dropped");
+							m_NumDroppedTunnelBuildMessages = 0;
+						}
 						HandleI2NPMessage (msg);
 					}
-					// else drop TBM
+					else // drop TBM
+						m_NumDroppedTunnelBuildMessages++;
 					break;
 				}
 				default:
diff --git a/libi2pd/I2NPProtocol.h b/libi2pd/I2NPProtocol.h
index a3323019..bef65267 100644
--- a/libi2pd/I2NPProtocol.h
+++ b/libi2pd/I2NPProtocol.h
@@ -319,12 +319,12 @@ namespace tunnel
 	size_t GetI2NPMessageLength (const uint8_t * msg, size_t len);
 	void HandleI2NPMessage (std::shared_ptr<I2NPMessage> msg);
 
-	const uint64_t TUNNEL_BUILD_MESSAGES_MIN_INTERVAL = 100; // in milliseconds
+	const uint64_t TUNNEL_BUILD_MESSAGES_MIN_INTERVAL = 200; // in milliseconds
 	class I2NPMessagesHandler
 	{
 		public:
 
-			I2NPMessagesHandler (): m_LastTunnelBuildMessageTimestamp (0) {};
+			I2NPMessagesHandler (): m_LastTunnelBuildMessageTimestamp (0), m_NumDroppedTunnelBuildMessages (0) {};
 			~I2NPMessagesHandler ();
 			void PutNextMessage (std::shared_ptr<I2NPMessage>&& msg);
 			void Flush ();
@@ -333,6 +333,7 @@ namespace tunnel
 
 			std::list<std::shared_ptr<I2NPMessage> > m_TunnelMsgs, m_TunnelGatewayMsgs;
 			uint64_t m_LastTunnelBuildMessageTimestamp; // in milliseconds
+			int m_NumDroppedTunnelBuildMessages;
 	};
 }