--- doc/Makefile.orig	2012-10-13 19:37:40.000000000 +0900
+++ doc/Makefile	2012-10-13 19:38:21.000000000 +0900
@@ -74,7 +74,7 @@
 
 MANPAGE_install: $(MANPAGE)
 	$(MKDIR) $(MANDIR)
-	$(INSTALL) $(INSTALL_BIN_ARGS) $< $(MANDIR)/$(notdir $<)
+	$(INSTALL_MAN) $< $(MANDIR)/$(notdir $<)
 
 clean clobber:
 	rm -rf $(MANPAGE) *~ $(OUTPUTDIR)/*.o $(OUTPUTDIR)/*.d \