diff --git a/src/svm/svm_fifo.c b/src/svm/svm_fifo.c
index d49cbe2..d357eb6 100644
--- a/src/svm/svm_fifo.c
+++ b/src/svm/svm_fifo.c
@@ -389,11 +389,13 @@
    */
   f->start_chunk->start_byte = 0;
   prev = f->start_chunk;
+  prev->enq_rb_index = prev->deq_rb_index = RBTREE_TNIL_INDEX;
   c = prev->next;
 
   while (c)
     {
       c->start_byte = prev->start_byte + prev->length;
+      c->enq_rb_index = c->deq_rb_index = RBTREE_TNIL_INDEX;
       prev = c;
       c = c->next;
     }