1 files changed, 4 insertions, 0 deletions
diff --git a/py/mpstate.h b/py/mpstate.h
index ab6090e1a2..bc1aaf1e09 100644
--- a/py/mpstate.h
+++ b/py/mpstate.h
@@ -125,6 +125,10 @@ typedef struct _mp_state_vm_t {
 
     qstr_pool_t *last_pool;
 
+    #if MICROPY_TRACKED_ALLOC
+    struct _m_tracked_node_t *m_tracked_head;
+    #endif
+
     // non-heap memory for creating an exception if we can't allocate RAM
     mp_obj_exception_t mp_emergency_exception_obj;