diff --git a/include/xo/facet/OObject.hpp b/include/xo/facet/OObject.hpp
index 93b532d..37298fe 100644
--- a/include/xo/facet/OObject.hpp
+++ b/include/xo/facet/OObject.hpp
@@ -6,7 +6,7 @@
 #pragma once
 
 #include "facet_implementation.hpp"
-#include "typeseq.hpp"
+#include <xo/reflectutil/typeseq.hpp>
 #include <new>
 #include <cstring>
 #include <cstddef>
@@ -64,6 +64,7 @@ namespace xo {
             using DataType = DRepr;
             using DataPtr = DRepr*;
             using Opaque = void *;
+            using typeseq = xo::reflect::typeseq;
 
             /* required for vtable swapping to work */
             //static_assert(std::is_trivially_copyable_v<AFacet>);
diff --git a/utest/CMakeLists.txt b/utest/CMakeLists.txt
index 81ec6d9..eec41c0 100644
--- a/utest/CMakeLists.txt
+++ b/utest/CMakeLists.txt
@@ -8,6 +8,7 @@ set(UTEST_SRCS
 
 if (ENABLE_TESTING)
     xo_add_utest_executable(${UTEST_EXE} ${UTEST_SRCS})
+    xo_self_dependency(${UTEST_EXE} xo_arena)
     xo_external_target_dependency(${UTEST_EXE} Catch2 Catch2::Catch2)
 endif()