diff --git a/Makefile b/Makefile
index 712d337..6f7a3ab 100644
--- a/Makefile
+++ b/Makefile
@@ -11,6 +11,9 @@ CFLAGS += -DCR_YEAR='"$(CR_YEAR)"'
 # CFLAGS += $(shell pkg-config --cflags libudev)
 # LIBS   += $(shell pkg-config --libs libudev)
 
+PREFIX ?= /usr/local
+DESTDIR ?=
+
 writeimg: writeimg.c
 	$(CC) $(CFLAGS) $(LIBS) -o $@ $^
 
@@ -18,4 +21,4 @@ clean:
 	rm -f *.o writeimg
 
 install: writeimg
-	install -m 0755 writeimg /usr/local/bin/writeimg
+	install -m 0755 $< $(DESTDIR)$(PREFIX)/bin/$<