diff --git a/build.mk b/build.mk
index 9cb2ae1..1956406 100644
--- a/build.mk
+++ b/build.mk
@@ -24,6 +24,7 @@
 SREC_CAT = srec_cat
 BIN2C = bin2c
 INSTALL = install
+TAR = tar
 
 
 ifeq ($(RELEASE), yes)