diff --git a/changelog b/changelog
new file mode 100644
--- /dev/null
+++ b/changelog
@@ -0,0 +1,4 @@
+-*-change-log-*-
+
+0.5.0	Nov 2013
+	* Restore the orth[-2] feature in the observation schema
diff --git a/concraft-pl.cabal b/concraft-pl.cabal
--- a/concraft-pl.cabal
+++ b/concraft-pl.cabal
@@ -1,5 +1,5 @@
 name:               concraft-pl
-version:            0.4.3
+version:            0.5.0
 synopsis:           Morphological tagger for Polish
 description:
     A morphological tagger for Polish based on the concraft library.
@@ -13,6 +13,8 @@
 category:           Natural Language Processing
 homepage:           http://zil.ipipan.waw.pl/Concraft
 build-type:         Simple
+
+extra-source-files: changelog
 
 data-files: config/nkjp-tagset.cfg
 
diff --git a/src/NLP/Concraft/Polish.hs b/src/NLP/Concraft/Polish.hs
--- a/src/NLP/Concraft/Polish.hs
+++ b/src/NLP/Concraft/Polish.hs
@@ -58,7 +58,7 @@
 -- | Default configuration for the guessing observation schema.
 disambSchemaDefault :: SchemaConf
 disambSchemaDefault = S.nullConf
-    { lowOrthC      = entry                         [-1, 0, 1]
+    { lowOrthC      = entry                         [-2, -1, 0, 1]
     , lowPrefixesC  = oov $ entryWith [1, 2, 3]     [0]
     , lowSuffixesC  = oov $ entryWith [1, 2, 3]     [0]
     , begPackedC    = oov $ entry                   [0] }