diff --git a/Makefile b/Makefile
index 7de2658..65b64a1 100644
--- a/Makefile
+++ b/Makefile
@@ -67,7 +67,7 @@ install-exec: build-exec
 #: Install man page into $DESTDIR/$mandir/man1/.
 install-man: build-man
 	$(INSTALL) -d "$(DESTDIR)$(mandir)/man1"
-	$(INSTALL) -m755 $(D)/$(BIN_NAME).1 "$(DESTDIR)$(mandir)/man1/$(BIN_NAME).1"
+	$(INSTALL) -m644 $(D)/$(BIN_NAME).1 "$(DESTDIR)$(mandir)/man1/$(BIN_NAME).1"
 
 #: Uninstall from $DESTDIR.
 uninstall: