diff --git a/Makefile b/Makefile
index 2bcb077..0cbc04f 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,9 @@ DEFAULT_CONFIG_LOCATION = 454656
 CONFIG_LOCATION = 458752
 HTML_LOCATION = 262144
 
-CC ?= sdcc
+ifeq ($(origin CC),default)
+CC = sdcc
+endif
 CC_FLAGS = -mmcs51 -I. -Ihttpd -Iuip
 ASM ?= sdas8051
 AFLAGS= -plosgff