diff --git a/folly/experimental/TestUtil.cpp b/folly/experimental/TestUtil.cpp
--- a/folly/experimental/TestUtil.cpp
+++ b/folly/experimental/TestUtil.cpp
@@ -19,6 +19,7 @@
 #include <sys/stat.h>
 #include <sys/types.h>
 
+#include <folly/portability/Windows.h>
 #include <boost/regex.hpp>
 #include <glog/logging.h>
 
diff --git a/folly/experimental/io/HugePages.cpp b/folly/experimental/io/HugePages.cpp
--- a/folly/experimental/io/HugePages.cpp
+++ b/folly/experimental/io/HugePages.cpp
@@ -27,6 +27,7 @@
 #include <stdexcept>
 #include <system_error>
 
+#include <folly/portability/Windows.h>
 #include <boost/regex.hpp>
 
 #include <folly/Conv.h>
diff --git a/folly/Benchmark.cpp b/folly/Benchmark.cpp
--- a/folly/Benchmark.cpp
+++ b/folly/Benchmark.cpp
@@ -29,6 +29,7 @@
 #include <utility>
 #include <vector>
 
+#include <folly/portability/Windows.h>
 #include <boost/regex.hpp>
 
 #include <folly/FileUtil.h>