diff --git a/contrib/rapidjson/include/rapidjson/document.h b/contrib/rapidjson/include/rapidjson/document.h
index 45b270811..e90d6a391 100644
--- a/contrib/rapidjson/include/rapidjson/document.h
+++ b/contrib/rapidjson/include/rapidjson/document.h
@@ -545,6 +545,7 @@ public:
             flags_ |= kIntFlag;
     }
 
+#if defined(__APPLE__)
     //! Constructor for unsigned long value.
     explicit GenericValue(unsigned long u64) RAPIDJSON_NOEXCEPT : data_(), flags_(kNumberUint64Flag) {
         data_.n.u64 = u64;
@@ -555,6 +556,7 @@ public:
         if (!(u64 & RAPIDJSON_UINT64_C2(0xFFFFFFFF, 0x80000000)))
             flags_ |= kIntFlag;
     }
+#endif
 
     //! Constructor for double value.
     explicit GenericValue(double d) RAPIDJSON_NOEXCEPT : data_(), flags_(kNumberDoubleFlag) { data_.n.d = d; }