diff --git a/src/test/cpp/rc_options_test.cc b/src/test/cpp/rc_options_test.cc
index daaba7f..418639e 100644
--- a/src/test/cpp/rc_options_test.cc
+++ b/src/test/cpp/rc_options_test.cc
@@ -34,8 +34,7 @@
 class RcOptionsTest : public ::testing::Test {
  protected:
   RcOptionsTest()
-      : test_file_dir_(blaze::GetEnv("TEST_TMPDIR")),
-        workspace_layout_() {}
+      : test_file_dir_(blaze::GetPathEnv("TEST_TMPDIR")), workspace_layout_() {}
 
   const string test_file_dir_;
   const WorkspaceLayout workspace_layout_;