diff --git a/Makefile b/Makefile
index 4525964..a5f5688 100644
--- a/Makefile
+++ b/Makefile
@@ -349,7 +349,7 @@
 AWK		= awk
 PERL		= perl
 PYTHON		?= python
-DTC		= dtc
+DTC		?= dtc
 CHECK		= sparse
 
 CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \