diff --git a/Makefile b/Makefile
index ee5e2e7..5916963 100644
--- a/Makefile
+++ b/Makefile
@@ -399,6 +399,8 @@
 				-ffreestanding -fno-builtin -fno-common		\
 				-Os -std=gnu99
 
+$(eval $(call add_define,SVE_VECTOR_LEN))
+
 ifeq (${SANITIZE_UB},on)
 TF_CFLAGS		+=	-fsanitize=undefined -fno-sanitize-recover
 endif
@@ -1085,6 +1087,7 @@
         RAS_EXTENSION \
         TWED_DELAY \
         ENABLE_FEAT_TWED \
+        SVE_VECTOR_LEN \
 )))
 
 ifdef KEY_SIZE