diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5ee79cf..1b59690 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,93 +1,99 @@
 #===============================================================================
 # @file   CMakeLists.txt
 #
 # @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
 #
 # @date   Thu Oct 11 12:43:10 2012
 #
 # @brief  main configuration file
 #
 # @section LICENSE
 #
 # Copyright (©) 2010-2011 EPFL (Ecole Polytechnique Fédérale de Lausanne)
 # Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
 #
 # Akantu is free  software: you can redistribute it and/or  modify it under the
 # terms  of the  GNU Lesser  General Public  License as  published by  the Free
 # Software Foundation, either version 3 of the License, or (at your option) any
 # later version.
 #
 # Akantu is  distributed in the  hope that it  will be useful, but  WITHOUT ANY
 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 # A  PARTICULAR PURPOSE. See  the GNU  Lesser General  Public License  for more
 # details.
 #
 # You should  have received  a copy  of the GNU  Lesser General  Public License
 # along with Akantu. If not, see <http://www.gnu.org/licenses/>.
 #
 #===============================================================================
 
 #===============================================================================
 # CMake Project
 #===============================================================================
 cmake_minimum_required(VERSION 2.6)
 
 project(IOHelper)
 enable_language(CXX)
 
 set(IOHelper_MAJOR_VERSION 0)
 set(IOHelper_MINOR_VERSION 1)
 
 #===============================================================================
 # Misc.
 #===============================================================================
 set(BUILD_SHARED_LIBS ON CACHE BOOL "Build shared libraries.")
 
 find_package (ZLIB)
 
 if(ZLIB_FOUND)
   set (IOHELPER_EXTERNAL_LIBS ${IOHELPER_EXTERNAL_LIBS} ${ZLIB_LIBRARIES})
   include_directories(${ZLIB_INCLUDE_DIRS})
 endif()
 
 #===============================================================================
 # Version Number
 #===============================================================================
 # IOHelper version number.  An even minor number corresponds to releases.
 execute_process(COMMAND ./get_revision.sh
   WORKING_DIRECTORY ${IOHelper_SOURCE_DIR}
   OUTPUT_VARIABLE IOHelper_BUILD_VERSION)
 
-string(STRIP ${IOHelper_BUILD_VERSION} IOHelper_BUILD_VERSION)
+if(IOHelper_BUILD_VERSION)
+  string(STRIP ${IOHelper_BUILD_VERSION} IOHelper_BUILD_VERSION)
 
-set(IOHelper_VERSION
-  "${IOHelper_MAJOR_VERSION}.${IOHelper_MINOR_VERSION}.${IOHelper_BUILD_VERSION}"
-  )
+  set(IOHelper_VERSION
+    "${IOHelper_MAJOR_VERSION}.${IOHelper_MINOR_VERSION}.${IOHelper_BUILD_VERSION}"
+    )
+else()
+  set(IOHelper_VERSION
+    "${IOHelper_MAJOR_VERSION}.${IOHelper_MINOR_VERSION}"
+    )
+endif()
 
 # Append the library version information to the library target properties
 if(NOT IOHelper_NO_LIBRARY_VERSION)
   set(IOHelper_LIBRARY_PROPERTIES ${IOHelper_LIBRARY_PROPERTIES}
     VERSION "${IOHelper_VERSION}"
     SOVERSION "${IOHelper_MAJOR_VERSION}.${IOHelper_MINOR_VERSION}"
     )
 endif(NOT IOHelper_NO_LIBRARY_VERSION)
 
 #==============================================================================
 # Library
 #===============================================================================
 add_subdirectory(src)
 
 #==============================================================================
 # Packaging
 #===============================================================================
 include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/IOHelperCPack.cmake)
 
 #===============================================================================
 # Tests
 #===============================================================================
 option(IOHELPER_TESTS "Activate tests" OFF)
 if(IOHELPER_TESTS)
   enable_testing()
   include(CTest)
   add_subdirectory(test)
 endif()
\ No newline at end of file