diff --git a/libi2pd/RouterInfo.cpp b/libi2pd/RouterInfo.cpp
index 12f81a42..8420044d 100644
--- a/libi2pd/RouterInfo.cpp
+++ b/libi2pd/RouterInfo.cpp
@@ -153,6 +153,12 @@ namespace data
 			m_IsUnreachable = true;
 			return;
 		}
+		if (m_RouterIdentity->GetCryptoKeyType () != CRYPTO_KEY_TYPE_ELGAMAL)
+		{
+			// we support ElGamal only. TODO: remove later
+			m_IsUnreachable = true;
+			return;	
+		}
 		if (verifySignature)
 		{
 			// reject RSA signatures