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diff --git a/src/dolfin/CMakeLists.txt b/src/dolfin/CMakeLists.txt
index afb33ce..96a5460 100644
--- a/src/dolfin/CMakeLists.txt
+++ b/src/dolfin/CMakeLists.txt
@@ -61,7 +61,7 @@ endif()
 
 # Set location of our FindFoo.cmake modules
 set(DOLFIN_CMAKE_DIR "${DOLFIN_SOURCE_DIR}/cmake" CACHE INTERNAL "")
-set(CMAKE_MODULE_PATH "${DOLFIN_CMAKE_DIR}/modules")
+set(CMAKE_MODULE_PATH "${CMAKE_MODULE_PATH}" "${DOLFIN_CMAKE_DIR}/modules")
 
 # Make sure CMake uses the correct DOLFINConfig.cmake for tests and demos
 set(CMAKE_PREFIX_PATH ${CMAKE_PREFIX_PATH} ${CMAKE_CURRENT_BINARY_DIR}/dolfin)
diff --git a/src/dolfin/cmake/modules/FindPaStiX.cmake b/src/dolfin/cmake/modules/FindPaStiX.cmake
index be2f60a..6b2566a 100644
--- a/src/dolfin/cmake/modules/FindPaStiX.cmake
+++ b/src/dolfin/cmake/modules/FindPaStiX.cmake
@@ -123,6 +123,8 @@ elseif (PASTIX_INCLUDE_DIRS AND PASTIX_LIBRARIES)
     set(CMAKE_REQUIRED_FLAGS     "${CMAKE_REQUIRED_FLAGS} ${MPI_C_COMPILE_FLAGS}")
   endif()
 
+ set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} "-lpastix -llapack  -lbz2 -lptscotch -lscotcherr")
+
   # Build and run test program
   include(CheckCSourceRuns)
   check_c_source_runs("
diff --git a/src/dolfin/cmake/modules/FindSCOTCH.cmake b/src/dolfin/cmake/modules/FindSCOTCH.cmake
index 58b96b4..97d7264 100644
--- a/src/dolfin/cmake/modules/FindSCOTCH.cmake
+++ b/src/dolfin/cmake/modules/FindSCOTCH.cmake
@@ -159,6 +159,14 @@ elseif (SCOTCH_INCLUDE_DIRS AND SCOTCH_LIBRARIES)
   set(CMAKE_REQUIRED_INCLUDES ${SCOTCH_INCLUDE_DIRS})
   set(CMAKE_REQUIRED_LIBRARIES ${SCOTCH_LIBRARIES})
   #set(CMAKE_REQUIRED_LIBRARIES ${SCOTCH_LIBRARY} ${SCOTCHERR_LIBRARY})
+  # TODO: see if scotch was built against bzip2 before finding
+  # nm --dynamic /usr/lib/libscotch.so | grep -w BZ2_bzRead
+  if (NOT BZIP2_FOUND)
+    find_package(BZip2)
+  endif()
+  if (BZIP2_FOUND)
+    set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} ${BZIP2_LIBRARIES})
+  endif()
 
   # Add MPI variables if MPI has been found
   if (MPI_CXX_FOUND)