diff --git a/Makefile b/Makefile
index 520a0d7..6f6d703 100644
--- a/Makefile
+++ b/Makefile
@@ -180,6 +180,7 @@
 				-Iinclude/drivers/io		\
 				-Iinclude/lib			\
 				-Iinclude/lib/aarch64		\
+				-Iinclude/lib/cpus/aarch64	\
 				-Iinclude/plat/common		\
 				-Iinclude/stdlib		\
 				-Iinclude/stdlib/sys		\