diff --git a/graphics/traveler/include/trv_graphics.h b/graphics/traveler/include/trv_graphics.h
index cb0684e9b..bb68741f1 100644
--- a/graphics/traveler/include/trv_graphics.h
+++ b/graphics/traveler/include/trv_graphics.h
@@ -41,6 +41,7 @@
  ****************************************************************************/
 
 #include "trv_types.h"
+#include <semaphore.h>
 
 #include <nuttx/video/fb.h>
 #ifdef CONFIG_NX