diff --git a/src/rt/rustrt.def.in b/src/rt/rustrt.def.in
index 8c550833d1c..3965651b548 100644
--- a/src/rt/rustrt.def.in
+++ b/src/rt/rustrt.def.in
@@ -195,3 +195,4 @@ rust_task_deref
 rust_call_tydesc_glue
 tdefl_compress_mem_to_heap
 tinfl_decompress_mem_to_heap
+rust_annihilate_box