diff --git a/test/source/greeter.cpp b/test/source/greeter.cpp
index 9e0204f..f7e1ec9 100644
--- a/test/source/greeter.cpp
+++ b/test/source/greeter.cpp
@@ -1,11 +1,10 @@
+#if defined(_WIN32) || defined(WIN32)
+#  define DOCTEST_CONFIG_USE_STD_HEADERS
+#endif
+
 #include <doctest/doctest.h>
 #include <greeter.h>
 
-#if defined(_WIN32) || defined(WIN32)
-// apparently this is required to compile in MSVC++
-#  include <ostream>
-#endif
-
 TEST_CASE("Greeter") {
   using namespace greeter;