diff --git a/lib/lyx2lyx/ChangeLog b/lib/lyx2lyx/ChangeLog
index 96da1b273a..70e514ada0 100644
--- a/lib/lyx2lyx/ChangeLog
+++ b/lib/lyx2lyx/ChangeLog
@@ -1,3 +1,7 @@
+2004-04-19  Martin Vermeer  <martin.vermeer@hut.fi>
+	* lyx_1_4.py (convert_frameless_box): Replace instead of adding
+	new code.
+.
 2004-04-14  José Matos  <jamatos@lyx.org>
 
 	* error.py
diff --git a/lib/lyx2lyx/lyx_1_4.py b/lib/lyx2lyx/lyx_1_4.py
index 4ad3c15346..212805b338 100644
--- a/lib/lyx2lyx/lyx_1_4.py
+++ b/lib/lyx2lyx/lyx_1_4.py
@@ -1008,7 +1008,7 @@ def convert_frameless_box(lines, opt):
 	    if j == -1:
 		opt.warning("Malformed LyX file: Missing '\\end_inset'.")
 		break
-	    lines[j-1:j-1] += ['\\begin_inset ERT', 'status ' + params['collapsed'],
+            lines[j-1:j-1] = ['\\begin_inset ERT', 'status ' + params['collapsed'],
 	                       '', '\\layout Standard', '']
 	    j = j + 4
 	    if params['use_parbox'] == '1':