diff --git a/test/test_attribute_packed.cpp b/test/test_attribute_packed.cpp
index 829af96..c9a8e27 100644
--- a/test/test_attribute_packed.cpp
+++ b/test/test_attribute_packed.cpp
@@ -2,6 +2,8 @@
 // Distributed under the Boost Software License, Version 1.0.
 // https://www.boost.org/LICENSE_1_0.txt
 
+#define BOOST_UUID_DISABLE_ALIGNMENT
+
 #include <boost/uuid/uuid.hpp>
 #include <boost/core/lightweight_test.hpp>
 #include <boost/config/pragma_message.hpp>