diff --git a/lib/lyx2lyx/LyX.py b/lib/lyx2lyx/LyX.py
index ead9a4eab3..2ba866c90a 100644
--- a/lib/lyx2lyx/LyX.py
+++ b/lib/lyx2lyx/LyX.py
@@ -80,7 +80,7 @@ format_relation = [("0_06",    [200], minor_versions("0.6" , 4)),
                    ("1_3",     [221], minor_versions("1.3" , 7)),
                    ("1_4", range(222,246), minor_versions("1.4" , 5)),
                    ("1_5", range(246,277), minor_versions("1.5" , 1)),
-                   ("1_6", range(277,286), minor_versions("1.6" , 0))]
+                   ("1_6", range(277,287), minor_versions("1.6" , 0))]
 
 
 def formats_list():
diff --git a/lib/lyx2lyx/lyx_1_6.py b/lib/lyx2lyx/lyx_1_6.py
index 3506b4ff99..9a546c1761 100644
--- a/lib/lyx2lyx/lyx_1_6.py
+++ b/lib/lyx2lyx/lyx_1_6.py
@@ -232,9 +232,11 @@ convert = [
            [283, [convert_flex]],
            [284, []],
            [285, []], # an empty manifest is automatically added
+           [286, []]
           ]
 
 revert =  [
+           [285, [revert_pdf_options]],
            [284, [remove_manifest, remove_inzip_options]],
            [283, []],
            [282, [revert_flex]],