diff --git a/BioHMM.cabal b/BioHMM.cabal
--- a/BioHMM.cabal
+++ b/BioHMM.cabal
@@ -1,5 +1,5 @@
 name:                BioHMM
-version:             1.0.7
+version:             1.0.8
 synopsis:            Libary for Hidden Markov Models in HMMER3 format. 
 description:         Libary containing parsing and visualisation functions and datastructures for Hidden Markov Models in HMMER3 format.  
 license:             GPL-3
@@ -20,8 +20,8 @@
 
 source-repository this
   type:     git
-  location: https://github.com/eggzilla/BioHMM/tree/1.0.7
-  tag:      1.0.7
+  location: https://github.com/eggzilla/BioHMM/tree/1.0.8
+  tag:      1.0.8
 
 library
   -- Modules exported by the library.
diff --git a/changelog b/changelog
--- a/changelog
+++ b/changelog
@@ -1,4 +1,6 @@
 -*-change-log-*-
+1.0.8 Florian Eggenhofer <egg@informatik.uni-freiburg.de> 7. April 2017
+	* Fixed a bug with a missing structure parameter character
 1.0.7 Florian Eggenhofer <egg@informatik.uni-freiburg.de> 19. March 2017
 	* Fixed a bug with incorrectly set transition cutoff
 1.0.6 Florian Eggenhofer <egg@informatik.uni-freiburg.de> 15. March 2017
diff --git a/src/Bio/HMMParser.hs b/src/Bio/HMMParser.hs
--- a/src/Bio/HMMParser.hs
+++ b/src/Bio/HMMParser.hs
@@ -273,5 +273,5 @@
 parseOptionalStructureParameter :: GenParser Char st (Maybe Char)
 parseOptionalStructureParameter = do
   many1 (oneOf " ")
-  _stru <- oneOf "<>().:[]{}~,_ABCDEFGHIJKLMNOPQRST-"
+  _stru <- oneOf "<>().:[]{}~,_ABCDEFGHIJKLMNOPQRSTX-"
   return (optionalStructureToMaybe _stru)