diff --git a/libi2pd/RouterContext.cpp b/libi2pd/RouterContext.cpp
index 8b5f5b77..4d60e193 100644
--- a/libi2pd/RouterContext.cpp
+++ b/libi2pd/RouterContext.cpp
@@ -699,7 +699,7 @@ namespace i2p
 			uint8_t nonce[12];
 			memset (nonce, 0, 12);
 			if (!i2p::crypto::AEADChaCha20Poly1305 (encrypted, TUNNEL_BUILD_RECORD_SIZE - 16, 
-				m_CurrentNoiseState->m_H, 32, m_CurrentNoiseState->m_CK, nonce, data, TUNNEL_BUILD_RECORD_SIZE - 16, false)) // decrypt
+				m_CurrentNoiseState->m_H, 32, m_CurrentNoiseState->m_CK + 32, nonce, data, TUNNEL_BUILD_RECORD_SIZE - 16, false)) // decrypt
 			{
 				LogPrint (eLogWarning, "Router: Tunnel record AEAD decryption failed");
 				return false;