diff --git a/test/cipher.cpp b/test/cipher.cpp
index 84929d6..f10c8a0 100644
--- a/test/cipher.cpp
+++ b/test/cipher.cpp
@@ -51,7 +51,7 @@
     }
 
     mdLen = 0;
-    cipher::integrity::Buffer output(SHA_DIGEST_LENGTH);
+    std::vector<uint8_t> output(SHA_DIGEST_LENGTH);
     size_t length = packet.size() - message::parser::RMCP_SESSION_HEADER_SIZE;
 
     if (HMAC(EVP_sha1(), K1.data(), K1.size(),
@@ -102,7 +102,7 @@
     }
 
     mdLen = 0;
-    cipher::integrity::Buffer output(SHA_DIGEST_LENGTH);
+    std::vector<uint8_t> output(SHA_DIGEST_LENGTH);
     size_t length = packet.size() - message::parser::RMCP_SESSION_HEADER_SIZE;
 
     if (HMAC(EVP_sha1(), K1.data(), K1.size(),