diff --git a/src/hotspot/share/gc/z/zThreadLocalData.hpp b/src/hotspot/share/gc/z/zThreadLocalData.hpp
index 627c312..e8011b4 100644
--- a/src/hotspot/share/gc/z/zThreadLocalData.hpp
+++ b/src/hotspot/share/gc/z/zThreadLocalData.hpp
@@ -25,9 +25,11 @@
 #define SHARE_GC_Z_ZTHREADLOCALDATA_HPP
 
 #include "gc/z/zMarkStack.hpp"
+#include "gc/z/zNMethodBarrier.hpp"
 #include "runtime/thread.hpp"
 #include "utilities/debug.hpp"
 #include "utilities/sizes.hpp"
+#include "utilities/macros.hpp"
 
 class ZThreadLocalData {
 private:
@@ -62,6 +64,10 @@ public:
   static ByteSize address_bad_mask_offset() {
     return Thread::gc_data_offset() + byte_offset_of(ZThreadLocalData, _address_bad_mask);
   }
+
+  static ByteSize address_nmethod_barrier_offset() {
+    return address_bad_mask_offset() + in_ByteSize(4);
+  }
 };
 
 #endif // SHARE_GC_Z_ZTHREADLOCALDATA_HPP