diff --git a/libcxx/test/std/utilities/format/format.functions/escaped_output.unicode.pass.cpp b/libcxx/test/std/utilities/format/format.functions/escaped_output.unicode.pass.cpp
--- a/libcxx/test/std/utilities/format/format.functions/escaped_output.unicode.pass.cpp
+++ b/libcxx/test/std/utilities/format/format.functions/escaped_output.unicode.pass.cpp
@@ -565,7 +565,6 @@
 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
 #  ifdef _LIBCPP_SHORT_WCHAR
   test_ill_formed_utf16();
-  assert(false);
 #  else  // _LIBCPP_SHORT_WCHAR
   test_ill_formed_utf32();
 #  endif // _LIBCPP_SHORT_WCHAR