diff --git a/ChangeLog b/ChangeLog
index 137232cb7b..16d3e5a736 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sun Dec 23 03:19:13 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* common.mk (encs, ext/ripper/ripper.c): MAKEFLAGS needs -.
+
 Sun Dec 23 01:56:18 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* io.c (rb_io_mode_enc): do not set encoding unless explicitly
diff --git a/common.mk b/common.mk
index ddf83f8a52..5914b7f762 100644
--- a/common.mk
+++ b/common.mk
@@ -342,7 +342,7 @@ $(RBCONFIG): $(srcdir)/mkconfig.rb config.status $(PREP)
 
 encs: enc.mk
 	$(MINIRUBY) -I$(srcdir)/lib -run -e mkdir -- -p "$(EXTOUT)/$(arch)/enc"
-	$(MAKE) -f enc.mk $(MFLAGS)$(MAKEFLAGS)
+	$(MAKE) -f enc.mk $(MFLAGS) -$(MAKEFLAGS)
 
 enc.mk: $(srcdir)/enc/make_encmake.rb $(srcdir)/enc/Makefile.in $(srcdir)/enc/depend \
 	$(srcdir)/lib/mkmf.rb $(RBCONFIG)
@@ -661,7 +661,7 @@ revision.h:
 	exit > $@
 
 $(srcdir)/ext/ripper/ripper.c:
-	cd $(srcdir)/ext/ripper && exec $(MAKE) -f depend $(MFLAGS)$(MAKEFLAGS) top_srcdir=../.. srcdir=.
+	cd $(srcdir)/ext/ripper && exec $(MAKE) -f depend $(MFLAGS) -$(MAKEFLAGS) top_srcdir=../.. srcdir=.
 
 ##