diff --git a/306-controller_interface.X/xf/xf.h b/306-controller_interface.X/xf/xf.h
index 1d280d8..4d61327 100644
--- a/306-controller_interface.X/xf/xf.h
+++ b/306-controller_interface.X/xf/xf.h
@@ -27,7 +27,7 @@ typedef struct Timer_        // timer structure
 /*----------------------------------------------------------------------------*/
 /* depending on usage, change MAXTIMER and MAXEVENT                           */
 /*----------------------------------------------------------------------------*/
-#define MAXTIMER 15          // number of timers in our system
+#define MAXTIMER 25          // number of timers in our system
 #define MAXEVENT 20         // number of events in our system 
 
 #define NULLTIMER 0         // no value for time