diff --git a/ChangeLog b/ChangeLog
index 53c7e220901815bd2162254b86b2cdd27d465a25..6e49e7aa3cb79f6f137fc9d20fc3f21b855aec5b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2008-06-07  Glenn Morris  <rgm@gnu.org>
+
+	* Makefile.in (bootstrap-build): Remove mostlyclean, since it seems to
+	serve no purpose.
+
 2008-06-01  Dan Nicolaescu  <dann@ics.uci.edu>
 
 	* configure.in (USE_LUCID, USE_MOTIF): Don't use "==".
diff --git a/Makefile.in b/Makefile.in
index 653d0e5a8b665250d5a3906a00231206f06f6ffa..3b3d7cf9e96bb3a559227c71991a928c614eea3e 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -843,11 +843,13 @@ bootstrap: bootstrap-clean-before FRC
 bootfast: bootstrap-clean-before-fast FRC
 	$(MAKE) $(MFLAGS) info bootstrap-build
 
+## There used to be a src; mostlyclean before all, but it does not
+## seem to serve any purpose, and compiles things twice.
+## http://lists.gnu.org/archive/html/emacs-devel/2008-06/msg00104.html
 bootstrap-build: FRC
 	(cd lisp; $(MAKE) $(MFLAGS) bootstrap-prepare)
 	(cd src; $(MAKE) $(MFLAGS) bootstrap)
 	(cd lisp; $(MAKE) $(MFLAGS) bootstrap EMACS=../src/bootstrap-emacs${EXEEXT})
-	(cd src; $(MAKE) $(MFLAGS) mostlyclean)
 	$(MAKE) $(MFLAGS) all
 	(cd lisp; $(MAKE) $(MFLAGS) bootstrap-after)