diff --git a/Makefile b/Makefile
index 6b6380b..36eb970 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,6 @@
+-include defs.mak
+
+
 SDCC ?= sdcc
 SDAR ?= sdar
 STCCODESIZE ?= 8192