diff --git a/ChangeLog b/ChangeLog
index 5be4ba981f..6390925375 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Jul  3 23:58:29 2001  Akinori MUSHA  <knu@iDaemons.org>
+
+	* lib/mkmf.rb: distclean should remove mkmf.log as well.
+
 Tue Jul  3 18:35:49 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* eval.c (rb_eval_string_wrap): should push frame (and adjust
diff --git a/lib/mkmf.rb b/lib/mkmf.rb
index 075547c9cc..92d216a12d 100644
--- a/lib/mkmf.rb
+++ b/lib/mkmf.rb
@@ -479,7 +479,7 @@ clean:;		@$(RM) *.#{$OBJEXT} *.so *.sl *.a $(DLLIB)
 		@$(RM) $(TARGET).lib $(TARGET).exp $(TARGET).ilk *.pdb
 
 distclean:	clean
-		@$(RM) Makefile extconf.h conftest.*
+		@$(RM) Makefile extconf.h conftest.* mkmf.log
 		@$(RM) core ruby$(EXEEXT) *~
 
 realclean:	distclean