diff --git a/project/src/net/curl/CURLBindings.cpp b/project/src/net/curl/CURLBindings.cpp
index 455a94e73..9e4112cd2 100644
--- a/project/src/net/curl/CURLBindings.cpp
+++ b/project/src/net/curl/CURLBindings.cpp
@@ -355,6 +355,7 @@ namespace lime {
 		if (method && !val_is_null (method)) {
 			
 			Bytes* _writeBytes = writeBytes[callback];
+			if (!_writeBytes) return 0;
 			_writeBytes->Resize (size * nmemb);
 			memcpy (_writeBytes->Data (), ptr, size * nmemb);