diff --git a/hw/bsp/apm32f0xx/family.mk b/hw/bsp/apm32f0xx/family.mk
index 7e26918c28..b053cb8432 100644
--- a/hw/bsp/apm32f0xx/family.mk
+++ b/hw/bsp/apm32f0xx/family.mk
@@ -12,7 +12,7 @@ CFLAGS += \
 	-DCFG_TUSB_MCU=OPT_MCU_APM32F0XX
 
 LDFLAGS += \
-	-flto --specs=nosys.specs -nostdlib -nostartfiles
+	-flto --specs=nosys.specs --specs=nano.specs -nostdlib -nostartfiles
 
 SRC_C += \
 	src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c \
diff --git a/hw/bsp/apm32f10x/family.mk b/hw/bsp/apm32f10x/family.mk
index c4d22160b5..2ec61c3dee 100644
--- a/hw/bsp/apm32f10x/family.mk
+++ b/hw/bsp/apm32f10x/family.mk
@@ -9,7 +9,7 @@ CFLAGS += \
   -flto
 
 LDFLAGS += \
-  -flto --specs=nosys.specs -nostdlib -nostartfiles
+  -flto --specs=nosys.specs --specs=nano.specs -nostdlib -nostartfiles
 
 SRC_C += \
   $(APM32_SDK)/APM32F10x_StdPeriphDriver/src/apm32f10x_gpio.c \