diff --git a/libguile/threads.c b/libguile/threads.c
index 4a956afcc..a313b8b7a 100644
--- a/libguile/threads.c
+++ b/libguile/threads.c
@@ -380,8 +380,6 @@ guilify_self_1 (struct GC_stack_base *base)
     abort ();
 
   scm_i_pthread_mutex_init (&t.admin_mutex, NULL);
-  t.current_mark_stack_ptr = NULL;
-  t.current_mark_stack_limit = NULL;
   t.canceled = 0;
   t.exited = 0;
   t.guile_mode = 0;
diff --git a/libguile/threads.h b/libguile/threads.h
index 3b67aacd4..d34e1abf7 100644
--- a/libguile/threads.h
+++ b/libguile/threads.h
@@ -72,11 +72,6 @@ typedef struct scm_i_thread {
   scm_i_pthread_cond_t sleep_cond;
   int sleep_fd, sleep_pipe[2];
 
-  /* XXX: These two fields used to hold information about the BDW-GC
-     mark stack during the mark phase.  They are no longer used.  */
-  void *current_mark_stack_ptr;
-  void *current_mark_stack_limit;
-
   /* Other thread local things.
    */
   SCM dynamic_state;