diff --git a/lib/rtl/rtl.h b/lib/rtl/rtl.h
index 21b53ad6da9..848ab3d0b04 100644
--- a/lib/rtl/rtl.h
+++ b/lib/rtl/rtl.h
@@ -39,6 +39,8 @@
 #define InterlockedDecrement _InterlockedDecrement
 #define InterlockedExchangeAdd _InterlockedExchangeAdd
 #define InterlockedExchange _InterlockedExchange
+#define InterlockedBitTestAndSet _interlockedbittestandset
+#define InterlockedBitTestAndSet64 _interlockedbittestandset64
 #endif
 
 #endif /* RTL_H */