1 files changed, 2 insertions, 2 deletions

diff --git a/config.mk b/config.mk
index b6c0f6a..fa17007 100644
--- a/config.mk
+++ b/config.mk
@@ -1,4 +1,4 @@
 CXX = clang
 CC = $(CXX)
-DESTDIR =
-PREFIX = /usr/local
+DESTDIR ?=
+PREFIX ?= /usr/local