diff --git a/src/native_ext/util/platform.cpp b/src/native_ext/util/platform.cpp
index 2449e178..c2f79566 100644
--- a/src/native_ext/util/platform.cpp
+++ b/src/native_ext/util/platform.cpp
@@ -21,6 +21,8 @@ int64_t HrTime() { return uv_hrtime(); }
 #endif
 
 #ifdef _WIN32
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
 #include <sysinfoapi.h>
 int64_t MicroSecondsSinceEpoch() {
   FILETIME ft;
@@ -30,6 +32,7 @@ int64_t MicroSecondsSinceEpoch() {
   t -= 116444736000000000LL;
   return t / 10LL;
 }
+#undef WIN32_LEAN_AND_MEAN
 #else
 #include <time.h>
 int64_t MicroSecondsSinceEpoch() {