diff --git a/Arduino.mk b/Arduino.mk
index 3b4ecdb..a8144e3 100644
--- a/Arduino.mk
+++ b/Arduino.mk
@@ -1763,7 +1763,7 @@ else ifeq ($(notdir $(MONITOR_CMD)), picocom)
 else ifeq ($(notdir $(MONITOR_CMD)), cu)
 		$(MONITOR_CMD) -l $(call get_monitor_port) -s $(MONITOR_BAUDRATE)
 else ifeq ($(MONITOR_CMD), less)
-		$(MONITOR_CMD) +F $(call get_monitor_port)
+		$(MONITOR_CMD) +F -f $(call get_monitor_port)
 else ifeq ($(MONITOR_CMD), tail)
 		$(MONITOR_CMD) -f $(call get_monitor_port)
 else ifeq ($(MONITOR_CMD), cat)