diff -r 4f3df962c9fb Modules/_tkinter.c
--- a/Modules/_tkinter.c	Wed Dec 19 15:17:43 2012 -0600
+++ b/Modules/_tkinter.c	Thu Dec 20 14:47:49 2012 +0200
@@ -870,7 +870,7 @@
 #if TCL_UTF_MAX == 3
             if (ch >= 0x10000) {
                 /* Tcl doesn't do UTF-16, yet. */
-                PyErr_Format(PyExc_ValueError,
+                PyErr_Format(Tkinter_TclError,
                              "character U+%x is above the range "
                              "(U+0000-U+FFFF) allowed by Tcl",
                              ch);