diff --git a/src/3rdparty/llhttp/llhttp.h b/src/3rdparty/llhttp/llhttp.h
index 60544596..59707a5d 100644
--- a/src/3rdparty/llhttp/llhttp.h
+++ b/src/3rdparty/llhttp/llhttp.h
@@ -552,8 +552,6 @@ extern "C" {
 
 #if defined(__wasm__)
 #define LLHTTP_EXPORT __attribute__((visibility("default")))
-#elif defined(_WIN32)
-#define LLHTTP_EXPORT __declspec(dllexport)
 #else
 #define LLHTTP_EXPORT
 #endif