diff --git a/zone/bot_structs.h b/zone/bot_structs.h
index e3bcc8678..99662e83b 100644
--- a/zone/bot_structs.h
+++ b/zone/bot_structs.h
@@ -20,6 +20,7 @@
 #define BOT_STRUCTS
 
 #include "../common/types.h"
+#include "../common/timer.h"
 
 #include <sstream>