diff --git a/board.mk b/board.mk
index 45a3cf0..81ef0ce 100644
--- a/board.mk
+++ b/board.mk
@@ -3,7 +3,8 @@ BOARDCPPSRC =  $(BOARD_DIR)/board_configuration.cpp
 DDEFS += -DFIRMWARE_ID=\"XXX\"
 SHORT_BOARD_NAME=XXX
 
-DDEFS += -DRAM_UNUSED_SIZE=1000
+# reduce memory usage monitoring
+DDEFS += -DRAM_UNUSED_SIZE=100
 
 # assign critical LED to a non-existent pin if you do not have it on your board
 # good old PD14 is still the default value