diff --git a/src/hb-atomic-private.hh b/src/hb-atomic-private.hh
index 111d7a0f4..67579cdd4 100644
--- a/src/hb-atomic-private.hh
+++ b/src/hb-atomic-private.hh
@@ -59,7 +59,7 @@ static inline void HBMemoryBarrier (void) {
 }
 #endif
 
-typedef long hb_atomic_int_t;
+typedef LONG hb_atomic_int_t;
 #define hb_atomic_int_add(AI, V)	InterlockedExchangeAdd (&(AI), (V))
 
 #define hb_atomic_ptr_get(P)		(HBMemoryBarrier (), (void *) *(P))