diff --git a/src/comp/middle/typeck.rs b/src/comp/middle/typeck.rs
index 01e66afd8d1..e0f3c578f7b 100644
--- a/src/comp/middle/typeck.rs
+++ b/src/comp/middle/typeck.rs
@@ -45,8 +45,6 @@ import std::option::from_maybe;
 
 import middle::tstate::ann::ts_ann;
 
-import pretty::ppaux::ty_to_str;
-
 type ty_table = hashmap[ast::def_id, ty::t];
 type fn_purity_table = hashmap[ast::def_id, ast::purity];