diff --git a/external/3rd/library/webAPI/webAPI.cpp b/external/3rd/library/webAPI/webAPI.cpp
index 721a8065..e95068e5 100644
--- a/external/3rd/library/webAPI/webAPI.cpp
+++ b/external/3rd/library/webAPI/webAPI.cpp
@@ -64,7 +64,7 @@ bool webAPI::submit(const int &reqType, const int &getPost, const int &respType)
 {
 	if (reqType == DTYPE::JSON) // json request
 	{
-		if (!this->requestData.is_null())
+		if (!this->requestData.empty())
 		{
 			// serialize our data into sRequest
 			this->sRequest = this->requestData.dump();