diff --git a/development/FORMAT b/development/FORMAT
index 8a54eea112..abe2184d2b 100644
--- a/development/FORMAT
+++ b/development/FORMAT
@@ -1,6 +1,10 @@
 LyX file-format changes
 -----------------------§
 
+2007-01-30  Uwe Stöhr
+
+	* format incremented to 257: lyxline changes
+
 2006-12-22  Georg Baum  <Georg.Baum@post.rwth-aachen.de>
 
 	* format incremented to 256: allow some new inputenc settings.
diff --git a/lib/lyx2lyx/LyX.py b/lib/lyx2lyx/LyX.py
index b8119276e6..cb129dfb40 100644
--- a/lib/lyx2lyx/LyX.py
+++ b/lib/lyx2lyx/LyX.py
@@ -73,7 +73,7 @@ format_relation = [("0_06",    [200], generate_minor_versions("0.6" , 4)),
                    ("1_2",     [220], generate_minor_versions("1.2" , 4)),
                    ("1_3",     [221], generate_minor_versions("1.3" , 7)),
                    ("1_4", range(222,246), generate_minor_versions("1.4" , 3)),
-                   ("1_5", range(246,258), generate_minor_versions("1.5" , 0))]
+                   ("1_5", range(246,259), generate_minor_versions("1.5" , 0))]
 
 
 def formats_list():
diff --git a/lib/lyx2lyx/lyx_1_5.py b/lib/lyx2lyx/lyx_1_5.py
index 0669620367..68f71cc18b 100644
--- a/lib/lyx2lyx/lyx_1_5.py
+++ b/lib/lyx2lyx/lyx_1_5.py
@@ -855,9 +855,11 @@ convert = [[246, []],
            [254, [convert_esint]],
            [255, []],
            [256, []],
-           [257, [convert_caption, convert_lyxline]]]
+           [257, [convert_caption]],
+           [258, [convert_lyxline]]]
 
-revert =  [[256, [revert_caption]],
+revert =  [[257, []],
+           [256, [revert_caption]],
            [255, [revert_encodings]],
            [254, [revert_clearpage, revert_cleardoublepage]],
            [253, [revert_esint]],
diff --git a/src/buffer.C b/src/buffer.C
index 9d1281ed77..8aa8d259ad 100644
--- a/src/buffer.C
+++ b/src/buffer.C
@@ -141,7 +141,7 @@ using std::string;
 
 namespace {
 
-int const LYX_FORMAT = 257;
+int const LYX_FORMAT = 258;
 
 } // namespace anon