diff --git a/src/rt/rustrt.def.in b/src/rt/rustrt.def.in
index 3d0b73da5e58..b47d18e780eb 100644
--- a/src/rt/rustrt.def.in
+++ b/src/rt/rustrt.def.in
@@ -27,6 +27,7 @@ rust_process_wait
 rust_ptr_eq
 rust_run_program
 rust_start
+rust_getcwd
 size_of
 squareroot
 str_alloc