diff --git a/cleandir/GNUmakefile b/cleandir/GNUmakefile
index 15a3a55..378f245 100644
--- a/cleandir/GNUmakefile
+++ b/cleandir/GNUmakefile
@@ -12,7 +12,7 @@ clean:
 distclean: clean
 	rm -f customize
 
-install: $(BINDIR) $(BINDIR)/cleandir
+install: $(BINDIR) $(BINDIR)/cleandir $(MAN1DIR)/cleandir.1
 
 %: %.pl customize
 	sh ./customize < $< > $@