1 files changed, 5 insertions, 15 deletions
diff --git a/tests/optional/driver.cxx b/tests/optional/driver.cxx
index 5d72f08..da09cf5 100644
--- a/tests/optional/driver.cxx
+++ b/tests/optional/driver.cxx
@@ -1,23 +1,13 @@
 // file      : tests/optional/driver.cxx -*- C++ -*-
 // license   : MIT; see accompanying LICENSE file
 
-#include <cassert>
-
-#ifndef __cpp_lib_modules_ts
 #include <vector>
 #include <utility>    // move()
-#endif
-
-// Other includes.
-
-#ifdef __cpp_modules_ts
-#ifdef __cpp_lib_modules_ts
-import std.core;
-#endif
-import butl.optional;
-#else
-#include <libbutl/optional.mxx>
-#endif
+
+#include <libbutl/optional.hxx>
+
+#undef NDEBUG
+#include <cassert>
 
 using namespace std;