diff --git a/xo-alloc2/include/xo/alloc2/arena/ArenaConfig.hpp b/xo-arena/include/xo/arena/ArenaConfig.hpp
similarity index 100%
rename from xo-alloc2/include/xo/alloc2/arena/ArenaConfig.hpp
rename to xo-arena/include/xo/arena/ArenaConfig.hpp
diff --git a/xo-gc/include/xo/gc/DX1Collector.hpp b/xo-gc/include/xo/gc/DX1Collector.hpp
index bde9f04d..40295b5e 100644
--- a/xo-gc/include/xo/gc/DX1Collector.hpp
+++ b/xo-gc/include/xo/gc/DX1Collector.hpp
@@ -10,8 +10,8 @@
 #include "object_age.hpp"
 #include "role.hpp"
 #include <xo/alloc2/Allocator.hpp>
-#include <xo/alloc2/arena/ArenaConfig.hpp>
 #include <xo/alloc2/arena/DArena.hpp>
+#include <xo/arena/ArenaConfig.hpp>
 #include <memory>
 #include <array>
 
diff --git a/xo-gc/utest/DX1CollectorIterator.test.cpp b/xo-gc/utest/DX1CollectorIterator.test.cpp
index 58a498c5..99347fad 100644
--- a/xo-gc/utest/DX1CollectorIterator.test.cpp
+++ b/xo-gc/utest/DX1CollectorIterator.test.cpp
@@ -8,7 +8,7 @@
 #include "DX1CollectorIterator.hpp"
 #include "detail/IAllocator_DX1Collector.hpp"
 #include "detail/IAllocIterator_DX1CollectorIterator.hpp"
-#include "arena/ArenaConfig.hpp"
+#include <xo/arena/ArenaConfig.hpp>
 #include "padding.hpp"
 #include <xo/indentlog/scope.hpp>
 #include <xo/indentlog/print/tag.hpp>