diff --git a/arch/arm/src/lpc43xx/Make.defs b/arch/arm/src/lpc43xx/Make.defs
index 6e5d7ef3a7..79ddaa4a02 100644
--- a/arch/arm/src/lpc43xx/Make.defs
+++ b/arch/arm/src/lpc43xx/Make.defs
@@ -126,6 +126,10 @@ ifeq ($(CONFIG_LPC43_ETHERNET),y)
 CHIP_CSRCS += lpc43_ethernet.c
 endif
 
+ifeq ($(CONFIG_LPC43_EMC),y)
+CHIP_CSRCS += lpc43_emc.c
+endif
+
 ifeq ($(CONFIG_LPC43_SPI),y)
 CHIP_CSRCS += lpc43_spi.c
 else