diff --git a/libraries/AP_HAL_ChibiOS/Scheduler.h b/libraries/AP_HAL_ChibiOS/Scheduler.h
index 1acaf55f38..1b20acde97 100644
--- a/libraries/AP_HAL_ChibiOS/Scheduler.h
+++ b/libraries/AP_HAL_ChibiOS/Scheduler.h
@@ -58,7 +58,7 @@
 #endif
 
 #ifndef RCIN_THD_WA_SIZE
-#define RCIN_THD_WA_SIZE    512
+#define RCIN_THD_WA_SIZE    768
 #endif
 
 #ifndef IO_THD_WA_SIZE