diff --git a/include/xo/object2/IGCObject_DFloat.hpp b/include/xo/object2/IGCObject_DFloat.hpp
index 1916f7e..a6c5c17 100644
--- a/include/xo/object2/IGCObject_DFloat.hpp
+++ b/include/xo/object2/IGCObject_DFloat.hpp
@@ -6,7 +6,7 @@
 #pragma once
 
 #include <xo/alloc2/alloc/AAllocator.hpp>
-#include <xo/gc/AGCObject.hpp>
+#include <xo/gc/detail/AGCObject.hpp>
 #include <xo/gc/detail/IGCObject_Xfer.hpp>
 #include "DFloat.hpp"
 
diff --git a/include/xo/object2/IGCObject_DInteger.hpp b/include/xo/object2/IGCObject_DInteger.hpp
index 69620b5..1f1f220 100644
--- a/include/xo/object2/IGCObject_DInteger.hpp
+++ b/include/xo/object2/IGCObject_DInteger.hpp
@@ -6,7 +6,7 @@
 #pragma once
 
 #include "xo/alloc2/alloc/AAllocator.hpp"
-#include <xo/gc/AGCObject.hpp>
+#include <xo/gc/detail/AGCObject.hpp>
 #include <xo/gc/detail/IGCObject_Xfer.hpp>
 #include "DInteger.hpp"
 
diff --git a/include/xo/object2/IGCObject_DList.hpp b/include/xo/object2/IGCObject_DList.hpp
index 927feb7..8ba91a6 100644
--- a/include/xo/object2/IGCObject_DList.hpp
+++ b/include/xo/object2/IGCObject_DList.hpp
@@ -8,7 +8,7 @@
 #include <xo/alloc2/alloc/AAllocator.hpp>
 #include <xo/alloc2/alloc/RAllocator.hpp>
 #include <xo/gc/Collector.hpp>
-#include <xo/gc/AGCObject.hpp>
+#include <xo/gc/detail/AGCObject.hpp>
 #include <xo/gc/detail/IGCObject_Xfer.hpp>
 #include "DList.hpp"