diff --git a/ports/nrf/Makefile b/ports/nrf/Makefile
index 5bc36cadee..ca22e093c3 100644
--- a/ports/nrf/Makefile
+++ b/ports/nrf/Makefile
@@ -65,7 +65,7 @@ NRF_DEFINES += -DCONFIG_GPIO_AS_PINRESET
 
 CFLAGS_CORTEX_M = -mthumb -mabi=aapcs -fsingle-precision-constant -Wdouble-promotion
 
-CFLAGS_MCU_m4 = $(CFLAGS_CORTEX_M) -mtune=cortex-m4 -mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard -ffunction-sections -fdata-sections
+CFLAGS_MCU_m4 = $(CFLAGS_CORTEX_M) -mtune=cortex-m4 -mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard
 
 CFLAGS_MCU_m0 = $(CFLAGS_CORTEX_M) --short-enums -mtune=cortex-m0 -mcpu=cortex-m0 -mfloat-abi=soft -fno-builtin
 
@@ -74,12 +74,14 @@ CFLAGS += $(CFLAGS_MCU_$(MCU_SERIES))
 CFLAGS += $(INC) -Wall -Werror -ansi -std=gnu99 -nostdlib $(COPT) $(NRF_DEFINES) $(CFLAGS_MOD)
 CFLAGS += -fno-strict-aliasing
 CFLAGS += -fstack-usage
+CFLAGS += -fdata-sections -ffunction-sections
 CFLAGS += -Iboards/$(BOARD)
 CFLAGS += -DNRF5_HAL_H='<$(MCU_VARIANT)_hal.h>'
 
 LDFLAGS = $(CFLAGS)
 LDFLAGS += -Xlinker -Map=$(@:.elf=.map)
 LDFLAGS += -mthumb -mabi=aapcs -T $(LD_FILE) -L boards/
+LDFLAGS += -Wl,--gc-sections
 
 #Debugging/Optimization
 ifeq ($(DEBUG), 1)