diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7128c4a..7e71dc3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,82 +1,78 @@
 cmake_minimum_required(VERSION 2.6 FATAL_ERROR)
 project(CepGen)
 set(PROJECT_VERSION 1)
 
 #SET (CMAKE_CXX_COMPILER "/usr/bin/clang++")
 if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 4.7)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wno-long-long -pedantic-errors -std=c++11 -g")
 else()
   message(FATAL_ERROR "gcc version >= 4.7 is required")
 endif()
 set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR} ${CMAKE_SOURCE_DIR}/cmake)
 set(CEPGEN_SOURCE_DIR ${PROJECT_SOURCE_DIR}/CepGen)
 set(CEPGEN_LIBRARIES CepGenCore CepGenEvent CepGenPhysics CepGenProcesses CepGenStructureFunctions CepGenExporter)
 
 #----- define all individual modules to be built beforehand
 
 set(CEPGEN_MODULES Processes Event Physics StructureFunctions Export)
 
 #----- enable fortran (for Pythia/Herwig/...)
 
 enable_language(Fortran OPTIONAL)
 add_subdirectory(External)
 
 #----- include external paths
 
 include(UseEnvironment)
 
 set(CEPGEN_EXTERNAL_REQS ${GSL_LIB} ${GSL_CBLAS_LIB} ${CEPGEN_LIBRARIES})
 
 if(MUPARSER)
   message(STATUS "muParser found in ${MUPARSER}")
   list(APPEND CEPGEN_EXTERNAL_REQS ${MUPARSER})
 endif()
 if(LIBCONFIG)
   message(STATUS "libconfig++ found in ${LIBCONFIG}")
   list(APPEND CEPGEN_EXTERNAL_REQS ${LIBCONFIG})
 endif()
 if(LHAPDF)
   message(STATUS "LHAPDF found in ${LHAPDF}")
   add_definitions(-DLIBLHAPDF)
   list(APPEND CEPGEN_EXTERNAL_REQS ${LHAPDF})
 endif()
 if(HEPMC_LIB)
   message(STATUS "HepMC found in ${HEPMC_INCLUDE}")
   include_directories(${HEPMC_INCLUDE})
   list(APPEND CEPGEN_EXTERNAL_REQS ${HEPMC_LIB})
   add_definitions(-DLIBHEPMC)
 endif()
-if(EXISTS $ENV{has_schaefer})
-  message(STATUS "Schaefer's F2 found!")
-  list(APPEND CEPGEN_EXTERNAL_REQS SchaeferF2)
-endif()
 
 #----- build all the intermediate objects
 
 include_directories(${PROJECT_SOURCE_DIR})
 add_subdirectory(${CEPGEN_SOURCE_DIR})
 foreach(_module ${CEPGEN_MODULES})
   include_directories(${CEPGEN_SOURCE_DIR}/${_module})
   add_subdirectory(${CEPGEN_SOURCE_DIR}/${_module})
 endforeach()
 
 #----- copy the input cards and other files
 
 file(GLOB input_cards RELATIVE ${PROJECT_SOURCE_DIR} Cards/*)
 foreach(_files ${input_cards})
   configure_file(${_files} ${_files} COPYONLY)
 endforeach()
 configure_file(${CEPGEN_SOURCE_DIR}/README README COPYONLY)
 
 #----- installation rules
 
 set(MODS "")
 foreach(_module ${CEPGEN_MODULES})
   list(APPEND MODS CepGen/${module})
 endforeach()
 install(DIRECTORY ${MODS} DESTINATION include/CepGen FILES_MATCHING PATTERN "*.h")
 
 #----- set the tests/utils directory
 
 add_subdirectory(test)