diff --git a/mode/hex.py b/mode/hex.py
index c9e8255..bbfa932 100644
--- a/mode/hex.py
+++ b/mode/hex.py
@@ -124,15 +124,10 @@ class HexOverwriteChar(Method):
             ix = b.cursorx_to_datax(cy, cx)
             if ix is None:
                 return
-            lm1 = w.mode.lmargin
             cx2 = w.buffer.datax_to_cursorx(ix)
             w.goto(Point(cx2, cy))
-            lm2 = w.mode.lmargin
             w.overwrite_char_at_cursor(self.part1)
-            lm3 = w.mode.lmargin
             w.overwrite_char_at_cursor(self.part2)
-            lm4 = w.mode.lmargin
-            w.set_error('%r/%r/%r/%r' % (lm1, lm2, lm3, lm4))
         elif self.char not in string.hexdigits:
             return
         else: