diff --git a/arch/arm/src/sam34/Make.defs b/arch/arm/src/sam34/Make.defs
index 622f5ab8c88..3c62069a5bb 100644
--- a/arch/arm/src/sam34/Make.defs
+++ b/arch/arm/src/sam34/Make.defs
@@ -86,6 +86,10 @@ CHIP_CSRCS += sam_serial.c sam_start.c sam_timerisr.c
 
 # Configuration-dependent SAM3/4 files
 
+ifeq ($(CONFIG_CRYPTO_AES),y)
+CHIP_CSRCS += sam_aes.c
+endif
+
 ifeq ($(CONFIG_ARCH_CHIP_SAM4CM),y)
 CHIP_CSRCS += sam4cm_supc.c
 endif