diff --git a/src/fmt.cc b/src/fmt.cc
index a02167c6..6638bb4a 100644
--- a/src/fmt.cc
+++ b/src/fmt.cc
@@ -63,8 +63,6 @@ module;
 #  if defined(__GLIBCXX__)
 #    include <ext/stdio_filebuf.h>
 #    include <ext/stdio_sync_filebuf.h>
-#  elif defined(_LIBCPP_VERSION)
-#    include <__std_stream>
 #  endif
 #  define WIN32_LEAN_AND_MEAN
 #  include <windows.h>