diff --git a/src/protocol/CryptionHandler.cpp b/src/protocol/CryptionHandler.cpp
index ed3318d..8c4e21f 100644
--- a/src/protocol/CryptionHandler.cpp
+++ b/src/protocol/CryptionHandler.cpp
@@ -142,8 +142,12 @@ bool CryptionHandler::setupSharedSecretNew(const std::string &alpha, const std::
 		memcpy(this->iv_struct, sharedIv.data(), 64);
 		this->iv_struct_length = 64;
 
-		auto digest_buffer = digest::sha1((char*) this->iv_struct, 64);
-		memcpy(this->current_mac, digest_buffer.data(), 8);
+		uint8_t mac_buffer[SHA_DIGEST_LENGTH];
+		digest::sha1((const char*) this->iv_struct, 64, mac_buffer);
+		memcpy(this->current_mac, mac_buffer, 8);
+
+		//auto digest_buffer = digest::sha1((char*) this->iv_struct, 64);
+		//memcpy(this->current_mac, digest_buffer.data(), 8);
 		this->useDefaultChipherKeyNonce = false;
 	}