diff --git a/ChangeLog b/ChangeLog
index 8345f05100..d42dde5914 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Thu Nov  4 15:02:14 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
+
+	* ext/tk/lib/tk/variable.rb: forget to initialize instance_variables
+	  of TkVarAccess objects
+
 Thu Nov  4 09:11:35 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* gc.c (gc_mark): enable GC stack checking.
diff --git a/ext/tk/lib/tk/variable.rb b/ext/tk/lib/tk/variable.rb
index d5882fd649..62d4ec29ae 100644
--- a/ext/tk/lib/tk/variable.rb
+++ b/ext/tk/lib/tk/variable.rb
@@ -961,6 +961,13 @@ class TkVarAccess<TkVariable
     @id = varname
     TkVar_ID_TBL[@id] = self
 
+    @def_default = false
+    @default_val = nil
+
+    @trace_var  = nil
+    @trace_elem = nil
+    @trace_opts = nil
+
     # teach Tk-ip that @id is global var
     INTERP._invoke_without_enc('global', @id)