diff --git a/libraries/AP_HAL_SITL/Scheduler.h b/libraries/AP_HAL_SITL/Scheduler.h
index 5ab530363b..39a5236fc0 100644
--- a/libraries/AP_HAL_SITL/Scheduler.h
+++ b/libraries/AP_HAL_SITL/Scheduler.h
@@ -6,7 +6,7 @@
 #include <sys/time.h>
 #include <pthread.h>
 
-#define SITL_SCHEDULER_MAX_TIMER_PROCS 4
+#define SITL_SCHEDULER_MAX_TIMER_PROCS 8
 
 /* Scheduler implementation: */
 class HALSITL::Scheduler : public AP_HAL::Scheduler {