diff --git a/thirdparty/sdl/joystick/SDL_sysjoystick.h b/thirdparty/sdl/joystick/SDL_sysjoystick.h
index 041ebc3b50..9b6ea65e9c 100644
--- a/thirdparty/sdl/joystick/SDL_sysjoystick.h
+++ b/thirdparty/sdl/joystick/SDL_sysjoystick.h
@@ -26,6 +26,8 @@
// This is the system specific header for the SDL joystick API
#include "SDL_joystick_c.h"
+#include <stdlib.h>
+
// Set up for C function definitions, even when using C++
#ifdef __cplusplus
extern "C" {
