diff --git a/libi2pd/SSU2Session.cpp b/libi2pd/SSU2Session.cpp
index 52edb71e..57d18876 100644
--- a/libi2pd/SSU2Session.cpp
+++ b/libi2pd/SSU2Session.cpp
@@ -2613,7 +2613,7 @@ namespace transport
 			int mtu = addr->ssu->mtu;
 			if (!mtu && addr->IsV4 ()) mtu = SSU2_MAX_PACKET_SIZE;
 			if (mtu > (int)maxMtu) mtu = maxMtu;
-			if (m_Address && m_Address->ssu && (!mtu || m_Address->ssu->mtu < mtu))
+			if (m_Address && m_Address->ssu && m_Address->ssu->mtu && (!mtu || m_Address->ssu->mtu < mtu))
 				mtu = m_Address->ssu->mtu;
 			if (mtu)
 			{