diff --git a/build.mk b/build.mk
index 1129291..b38962f 100644
--- a/build.mk
+++ b/build.mk
@@ -19,6 +19,7 @@
 RM = rm
 LS = ls
 SED = sed
+SCP = scp
 MKDIR = mkdir
 CHMOD = chmod
 SREC_CAT = srec_cat