diff --git a/ChangeLog b/ChangeLog
index 630168578b..0a1ab5f545 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+Mon Nov 24 21:38:23 2008  Shugo Maeda  <shugo@ruby-lang.org>
+
+	* strftime.c (rb_strftime): The default precision should be 1, not
+	  0.  [ruby-dev:37155]
+
+	* test/ruby/test_time.rb (test_strftime): ditto.
+
 Mon Nov 24 19:53:47 2008  Tadayoshi Funaba  <tadf@dotrb.org>
 
 	* lib/date.rb (inspect): changed again.
diff --git a/strftime.c b/strftime.c
index af66fa6377..5565a9be07 100644
--- a/strftime.c
+++ b/strftime.c
@@ -405,7 +405,7 @@ rb_strftime(char *s, size_t maxsize, const char *format, const struct tm *timept
 
 		case 'w':	/* weekday, Sunday == 0, 0 - 6 */
 			i = range(0, timeptr->tm_wday, 6);
-			FMT('0', 0, "d", i);
+			FMT('0', 1, "d", i);
 			continue;
 
 		case 'W':	/* week of year, Monday is first day of week */
@@ -426,7 +426,7 @@ rb_strftime(char *s, size_t maxsize, const char *format, const struct tm *timept
 			continue;
 
 		case 'Y':	/* year with century */
-			FMT('0', 0, "ld", 1900L + timeptr->tm_year);
+			FMT('0', 1, "ld", 1900L + timeptr->tm_year);
 			continue;
 
 #ifdef MAILHEADER_EXT
@@ -623,7 +623,7 @@ rb_strftime(char *s, size_t maxsize, const char *format, const struct tm *timept
 
 		case 'u':
 		/* ISO 8601: Weekday as a decimal number [1 (Monday) - 7] */
-			FMT('0', 0, "d", timeptr->tm_wday == 0 ? 7 : timeptr->tm_wday);
+			FMT('0', 1, "d", timeptr->tm_wday == 0 ? 7 : timeptr->tm_wday);
 			continue;
 #endif	/* POSIX2_DATE */
 
@@ -648,7 +648,7 @@ rb_strftime(char *s, size_t maxsize, const char *format, const struct tm *timept
 				y = 1900L + timeptr->tm_year;
 
 			if (*format == 'G')
-				FMT('0', 0, "ld", y);
+				FMT('0', 1, "ld", y);
 			else
 				FMT('0', 2, "ld", y % 100);
 			continue;
diff --git a/test/ruby/test_time.rb b/test/ruby/test_time.rb
index 3a9b055802..d3b6982649 100644
--- a/test/ruby/test_time.rb
+++ b/test/ruby/test_time.rb
@@ -444,5 +444,10 @@ class TestTime < Test::Unit::TestCase
     assert_equal(" 2", t.strftime("%l"))
     assert_equal("02", t.strftime("%0l"))
     assert_equal(" 2", t.strftime("%_l"))
+
+    # [ruby-dev:37155]
+    t = Time.mktime(1970, 1, 18)
+    assert_equal("0", t.strftime("%w"))
+    assert_equal("7", t.strftime("%u"))
   end
 end