diff --git a/include/windows/sys/resource.h b/include/windows/sys/resource.h
index d4628f259..d8f2607b4 100644
--- a/include/windows/sys/resource.h
+++ b/include/windows/sys/resource.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014 Nicira, Inc.
+ * Copyright (c) 2014, 2017 Nicira, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -48,4 +48,6 @@ struct rusage {
 #define RUSAGE_THREAD 3
 #endif
 
+int getrusage(int who, struct rusage *usage);
+
 #endif /* sys/resource.h */