diff --git a/Makefile b/Makefile
index 1e66089..d25c0d1 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
-DESTDIR ?= /
+DESTDIR ?= 
 PREFIX ?= /usr
 
 install:
-	install -D -m 755 checkrun.sh $(DESTDIR)/$(PREFIX)/bin/checkrun
+	install -D -m 755 checkrun.sh $(DESTDIR)$(PREFIX)/bin/checkrun
 
 .PHONY: install