diff --git a/libcxx/test/libcxx/input.output/file.streams/fstreams/filebuf/traits_mismatch.fail.cpp b/libcxx/test/libcxx/input.output/file.streams/fstreams/filebuf/traits_mismatch.fail.cpp
index a7378275970f99..c607c6328d3ea5 100644
--- a/libcxx/test/libcxx/input.output/file.streams/fstreams/filebuf/traits_mismatch.fail.cpp
+++ b/libcxx/test/libcxx/input.output/file.streams/fstreams/filebuf/traits_mismatch.fail.cpp
@@ -17,7 +17,7 @@
 
 int main(int, char**)
 {
-	std::basic_filebuf<char, std::char_traits<wchar_t> > f;
+  std::basic_filebuf<char, std::char_traits<wchar_t> > f;
   // expected-error-re@streambuf:* {{{{(static_assert|static assertion)}} failed{{.*}}traits_type::char_type must be the same type as CharT}}
   // expected-error@fstream:* {{only virtual member functions can be marked 'override'}}
   // expected-error@fstream:* {{only virtual member functions can be marked 'override'}}