diff --git a/include/chibi/features.h b/include/chibi/features.h
index 8710f26c..4eb8734c 100644
--- a/include/chibi/features.h
+++ b/include/chibi/features.h
@@ -670,7 +670,8 @@
 #endif
 
 #ifndef SEXP_USE_SEND_FILE
-#define SEXP_USE_SEND_FILE (__linux || SEXP_BSD)
+#define SEXP_USE_SEND_FILE 0
+/* #define SEXP_USE_SEND_FILE (__linux || SEXP_BSD) */
 #endif
 
 #if SEXP_USE_NATIVE_X86