diff --git a/simulate/src/joystick/jstest.cc b/simulate/src/joystick/jstest.cc
index 47f8d1cc..061797f4 100755
--- a/simulate/src/joystick/jstest.cc
+++ b/simulate/src/joystick/jstest.cc
@@ -1,3 +1,4 @@
+#include <stdint.h>
 #include <unistd.h>
 #include <iostream>
 #include <map>