diff --git a/ChangeLog b/ChangeLog
index b2acfdb89b..a0bbb3eba0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sun Jan  7 18:28:17 2007  Koichi Sasada  <ko1@atdot.net>
+
+	* common.mk: add a "compare" rule and fix MATZRUBY variable
+
 Sun Jan  7 17:47:16 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
 
 	* test/win32ole/test_win32ole.rb: add test for WIN32OLE#[],
diff --git a/common.mk b/common.mk
index 57f1815404..b70b404e4b 100644
--- a/common.mk
+++ b/common.mk
@@ -525,7 +525,7 @@ blockinlining.$(OBJEXT): {$(VPATH)}yarv.h {$(VPATH)}yarvcore.h vm_opts.h
 
 
 BASERUBY = ruby
-MATZRUBY = $(BASERUBY)
+MATZRUBY = $(MATZRUBYDIR)ruby
 
 INSNS2VMOPT = $(CPPFLAGS) --srcdir=$(srcdir)
 
@@ -564,6 +564,10 @@ docs:
 
 ##
 
+compare: miniruby$(EXEEXT) PHONY
+	@$(MATZRUBY) -v -I$(srcdir) $(srcdir)/test.rb
+	@$(MINIRUBY) -v -I$(srcdir) $(srcdir)/test.rb
+
 compare-test: miniruby$(EXEEXT) PHONY
 	$(BASERUBY) -I$(srcdir) $(srcdir)/yarvtest/runner.rb $(OPT) ruby=$(MINIRUBY) matzruby=$(MATZRUBY)
 
diff --git a/version.h b/version.h
index 6c3e878148..17b268e771 100644
--- a/version.h
+++ b/version.h
@@ -1,7 +1,7 @@
 #define RUBY_VERSION "1.9.0"
-#define RUBY_RELEASE_DATE "2007-01-06"
+#define RUBY_RELEASE_DATE "2007-01-07"
 #define RUBY_VERSION_CODE 190
-#define RUBY_RELEASE_CODE 20070106
+#define RUBY_RELEASE_CODE 20070107
 #define RUBY_PATCHLEVEL 0
 
 #define RUBY_VERSION_MAJOR 1
@@ -9,7 +9,7 @@
 #define RUBY_VERSION_TEENY 0
 #define RUBY_RELEASE_YEAR 2007
 #define RUBY_RELEASE_MONTH 1
-#define RUBY_RELEASE_DAY 6
+#define RUBY_RELEASE_DAY 7
 
 RUBY_EXTERN const char ruby_version[];
 RUBY_EXTERN const char ruby_release_date[];