diff --git a/arch/arm/src/sam34/Make.defs b/arch/arm/src/sam34/Make.defs
index b559f70559a..42e4b5d8071 100644
--- a/arch/arm/src/sam34/Make.defs
+++ b/arch/arm/src/sam34/Make.defs
@@ -104,9 +104,11 @@ ifeq ($(CONFIG_SAM34_DMAC0),y)
 CHIP_CSRCS += sam_dmac.c
 endif
 
+ifeq ($(CONFIG_ARCH_CHIP_SAM4L),y)
 ifeq ($(CONFIG_SAM34_PDCA),y)
 CHIP_CSRCS += sam4l_pdca.c
 endif
+endif
 
 ifeq ($(CONFIG_SAM34_EMAC),y)
 CHIP_CSRCS += sam_emac.c
@@ -127,3 +129,7 @@ ifeq ($(CONFIG_SAM34_SPI1),y)
 CHIP_CSRCS += sam_spi.c
 endif
 endif
+
+ifeq ($(CONFIG_SAM34_RTC),y)
+CHIP_CSRCS += sam_rtc.c
+endif