diff --git a/pybddisasm/_pybddisasm/pybddisasm.c b/pybddisasm/_pybddisasm/pybddisasm.c
index e76efef..1daea82 100644
--- a/pybddisasm/_pybddisasm/pybddisasm.c
+++ b/pybddisasm/_pybddisasm/pybddisasm.c
@@ -22,18 +22,3 @@ int nd_to_text(INSTRUX *instrux, size_t rip, size_t bufsize, char *buf)
 {
     return NdToText(instrux, rip, bufsize, buf);
 }
-
-#include <stdio.h>
-#include <string.h>
-
-int
-nd_vsnprintf_s(char *str, size_t sizeOfBuffer, size_t count, const char *format, va_list args)
-{
-    (void)(sizeOfBuffer);
-    return vsnprintf(str, count, format, args);
-}
-
-void *nd_memset(void *s, int c, size_t n)
-{
-    return memset(s, c, n);
-}