diff --git a/vm/os-windows.cpp b/vm/os-windows.cpp
index 4fee07f7e9..d8699280b3 100644
--- a/vm/os-windows.cpp
+++ b/vm/os-windows.cpp
@@ -376,3 +376,5 @@ void abort() { ::abort(); }
 int THREADSAFE_STRERROR(int errnum, char *buf, size_t buflen) {
   return strerror_s(buf, buflen, errnum);
 }
+
+}