diff --git a/include/crow/json.h b/include/crow/json.h
index 04c448b09..f4b607f03 100644
--- a/include/crow/json.h
+++ b/include/crow/json.h
@@ -1670,7 +1670,7 @@ namespace crow
                 }
                 else
                 {
-#if defined(__APPLE__) || defined(__MACH__) || defined(__FreeBSD__) || defined(__ANDROID__)
+#if defined(__APPLE__) || defined(__MACH__) || defined(__FreeBSD__) || defined(__ANDROID__) || defined(_LIBCPP_VERSION)
                     o = std::unique_ptr<object>(new object(initializer_list));
 #else
                     (*o) = initializer_list;
@@ -1689,7 +1689,7 @@ namespace crow
                 }
                 else
                 {
-#if defined(__APPLE__) || defined(__MACH__) || defined(__FreeBSD__) || defined(__ANDROID__)
+#if defined(__APPLE__) || defined(__MACH__) || defined(__FreeBSD__) || defined(__ANDROID__) || defined(_LIBCPP_VERSION)
                     o = std::unique_ptr<object>(new object(value));
 #else
                     (*o) = value;