diff --git a/tests/wchar_test.cpp b/tests/wchar_test.cpp
index d5d27ed..be451c1 100644
--- a/tests/wchar_test.cpp
+++ b/tests/wchar_test.cpp
@@ -155,3 +155,7 @@
   bytes[3] = 0;
   EXPECT_STREQ("hix", bytes);
 }
+
+TEST(wchar, limits) {
+  ASSERT_LT(WCHAR_MIN, WCHAR_MAX);
+}