diff --git a/http_parser.h b/http_parser.h
index fc6fb6d..5b648fa 100644
--- a/http_parser.h
+++ b/http_parser.h
@@ -25,9 +25,6 @@ extern "C" {
 #endif
 
 
-#ifdef _MSC_VER
-# include <stddef.h>
-#endif
 #include <sys/types.h>