diff --git a/Makefile b/Makefile
index 65c9b5a..23e899f 100644
--- a/Makefile
+++ b/Makefile
@@ -66,7 +66,7 @@ endif
 	sed "s/VERSION/${VERSION}/g" < dwm.1 > ${DESTDIR}${MANPREFIX}/man1/dwm.1
 	chmod 644 ${DESTDIR}${MANPREFIX}/man1/dwm.1
 	mkdir -p ${DESTDIR}${PREFIX}/share/xsessions
-	cp -n dwm.desktop ${DESTDIR}${PREFIX}/share/xsessions
+	test -f ${DESTDIR}${PREFIX}/share/xsessions/dwm.desktop || cp -n dwm.desktop ${DESTDIR}${PREFIX}/share/xsessions
 	chmod 644 ${DESTDIR}${PREFIX}/share/xsessions/dwm.desktop
 
 uninstall: