diff --git a/hw/bsp/frdm_kl25z/board.mk b/hw/bsp/frdm_kl25z/board.mk
index 451bc37c2..bc9240e55 100644
--- a/hw/bsp/frdm_kl25z/board.mk
+++ b/hw/bsp/frdm_kl25z/board.mk
@@ -8,8 +8,12 @@ CFLAGS += \
   -DCPU_MKL25Z128VLK4 \
   -DCFG_TUSB_MCU=OPT_MCU_MKL25ZXX
 
+LDFLAGS += \
+  -Wl,--defsym,__stack_size__=0x400 \
+  -Wl,--defsym,__heap_size__=0
+
 # mcu driver cause following warnings
-CFLAGS += -Wno-error=unused-parameter
+CFLAGS += -Wno-error=unused-parameter -Wno-error=format
 
 MCU_DIR = $(SDK_DIR)/devices/MKL25Z4