--- Makefile.am.orig	2015-10-27 12:38:55.582267995 +0100
+++ Makefile.am	2015-10-27 12:39:02.772323322 +0100
@@ -152,11 +152,6 @@
 		rm -f $(DESTDIR)$(bindir)/mutt.dotlock ;		\
 		ln -sf $(DESTDIR)$(bindir)/mutt_dotlock $(DESTDIR)$(bindir)/mutt.dotlock ; \
 	fi
-	if test -f $(DESTDIR)$(bindir)/mutt_dotlock && test x$(DOTLOCK_GROUP) != x ; then \
-		chgrp $(DOTLOCK_GROUP) $(DESTDIR)$(bindir)/mutt_dotlock && \
-		chmod $(DOTLOCK_PERMISSION) $(DESTDIR)$(bindir)/mutt_dotlock || \
-		{ echo "Can't fix mutt_dotlock's permissions!  This is required to lock mailboxes in the mail spool directory." >&2 ; exit 1 ; } \
-	fi
 
 install-data-local:
 	$(MKDIR_P) $(DESTDIR)$(sysconfdir)