diff --git a/libcxx/src/random.cpp b/libcxx/src/random.cpp
index 47cdee402b7f..bd24f2e50c1a 100644
--- a/libcxx/src/random.cpp
+++ b/libcxx/src/random.cpp
@@ -19,8 +19,10 @@
 #ifdef __sun__
 #define rename solaris_headers_are_broken
 #endif
+#if !defined(_WIN32)
 #include <fcntl.h>
 #include <unistd.h>
+#endif // defined(_WIN32)
 #include <errno.h>
 
 _LIBCPP_BEGIN_NAMESPACE_STD