diff --git a/include/stdex/curl.hpp b/include/stdex/curl.hpp
index d76d3356d..50600c192 100644
--- a/include/stdex/curl.hpp
+++ b/include/stdex/curl.hpp
@@ -112,7 +112,7 @@ namespace stdex
 		///
 		/// \sa [curl_global_init function](https://curl.se/libcurl/c/curl_global_init.html)
 		///
-		curl_initializer(_In_ long flags)
+		curl_initializer(_In_ long flags = CURL_GLOBAL_DEFAULT)
 		{
 			auto code = curl_global_init(flags);
 			if (code != CURLE_OK) _Unlikely_