diff --git a/libs/stfu/stfu.h b/libs/stfu/stfu.h
index 743b2b47b2..792a4959c7 100644
--- a/libs/stfu/stfu.h
+++ b/libs/stfu/stfu.h
@@ -36,6 +36,8 @@ extern "C" {
 #endif
 
 #include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 
 #ifdef  _MSC_VER
 #ifndef uint32_t