diff --git a/var/spack/repos/builtin/packages/tasmanian/package.py b/var/spack/repos/builtin/packages/tasmanian/package.py
index 1e57b3e70f0..45fa7dcb5d3 100644
--- a/var/spack/repos/builtin/packages/tasmanian/package.py
+++ b/var/spack/repos/builtin/packages/tasmanian/package.py
@@ -156,7 +156,7 @@ def cmake_args(self):
     def test(self):
         # using the tests installed in <prefix>/share/Tasmanian/testing
         cmake_dir = join_path(self.prefix, 'share', 'Tasmanian', 'testing')
-        with working_dir(self.install_test_root, create=True):
+        with working_dir(self.test_suite.current_test_cache_dir, create=True):
             cmake(cmake_dir)
             make()
             make('test')