diff --git a/src/micro_ros_rtt.h b/src/micro_ros_rtt.h
index 19930df655d94d59654f01f5398b302661a886d5..5d1d5ae9a438c542c69822ec111d61c2a497e9f2 100755
--- a/src/micro_ros_rtt.h
+++ b/src/micro_ros_rtt.h
@@ -3,6 +3,7 @@
 #define MICRO_ROS_RTT
 
 #include <rtthread.h>
+#include <sys/time.h>
 
 // ---- Build fixes -----
 //Removing __attribute__ not supported by gcc-arm-none-eabi-5_4