diff --git a/wmacpi/Makefile b/wmacpi/Makefile
index 44fb5bd..5c6f0aa 100644
--- a/wmacpi/Makefile
+++ b/wmacpi/Makefile
@@ -62,10 +62,10 @@ clean:
 clean-all: clean
 
 install: $(targets)
-	install -d $(PREFIX)/bin/
-	install -pc $(targets) $(PREFIX)/bin/
-	install -d $(PREFIX)/share/man/man1/
-	install -pc $(doc_targets) $(PREFIX)/share/man/man1/
+	install -d $(DESTDIR)$(PREFIX)/bin/
+	install -pc $(targets) $(DESTDIR)$(PREFIX)/bin/
+	install -d $(DESTDIR)$(PREFIX)/share/man/man1/
+	install -pc $(doc_targets) $(DESTDIR)$(PREFIX)/share/man/man1/
 
 tags:
 	etags $(WMSRC) $(CLSRC) $(HEADERS)