diff --git a/ChangeLog b/ChangeLog
index 5d553edf90..2d96c5f5fd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Feb 19 18:34:32 2008  Tanaka Akira  <akr@fsij.org>
+
+	* gc.c (STACK_LENGTH) [SPARC] : 0x80 offset removed.  [ruby-dev:33857]
+
 Tue Feb 19 14:27:32 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* ext/readline/readline.c (readline_event): prevent polling.  based on
diff --git a/gc.c b/gc.c
index 4ef74f6e36..849c15ff69 100644
--- a/gc.c
+++ b/gc.c
@@ -574,9 +574,7 @@ rb_data_object_alloc(VALUE klass, void *datap, RUBY_DATA_FUNC dmark, RUBY_DATA_F
 #define STACK_END (th->machine_stack_end)
 #define STACK_LEVEL_MAX (th->machine_stack_maxsize/sizeof(VALUE))
 
-#if defined(sparc) || defined(__sparc__)
-# define STACK_LENGTH  (STACK_START - STACK_END + 0x80)
-#elif STACK_GROW_DIRECTION < 0
+#if STACK_GROW_DIRECTION < 0
 # define STACK_LENGTH  (STACK_START - STACK_END)
 #elif STACK_GROW_DIRECTION > 0
 # define STACK_LENGTH  (STACK_END - STACK_START + 1)