diff --git a/collects/tests/typed-scheme/unit-tests/contract-tests.ss b/collects/tests/typed-scheme/unit-tests/contract-tests.ss
index d339a359..96790e17 100644
--- a/collects/tests/typed-scheme/unit-tests/contract-tests.ss
+++ b/collects/tests/typed-scheme/unit-tests/contract-tests.ss
@@ -6,7 +6,7 @@
          (private type-contract)	 
 	 (rep type-rep filter-rep object-rep)
          (types utils union convenience)
-         (utils tc-utils mutated-vars)
+         (utils tc-utils)
          (schemeunit))
 
 (define-syntax-rule (t e)
diff --git a/collects/tests/typed-scheme/unit-tests/typecheck-tests.ss b/collects/tests/typed-scheme/unit-tests/typecheck-tests.ss
index 2b84de80..758e98e8 100644
--- a/collects/tests/typed-scheme/unit-tests/typecheck-tests.ss
+++ b/collects/tests/typed-scheme/unit-tests/typecheck-tests.ss
@@ -9,7 +9,8 @@
          (rename-in (types utils union convenience)
                     [Un t:Un]
                     [-> t:->])
-         (utils tc-utils mutated-vars)
+         (utils tc-utils)
+         unstable/mutated-vars
          (env type-name-env type-environments init-envs)
          (schemeunit)
          syntax/parse)