diff --git a/CMakeLists.txt b/CMakeLists.txt
index 132748f7..3a16f667 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -126,7 +126,6 @@ if (BUILDDOC)
     string (REPLACE "." ";" PYTHON_VERSION_LIST ${PYTHONLIBS_VERSION_STRING})
     list (GET PYTHON_VERSION_LIST 0 PYTHON_VERSION_MAJOR)
     list (GET PYTHON_VERSION_LIST 1 PYTHON_VERSION_MINOR)
-    set (SITE_PACKAGES ${CMAKE_INSTALL_PREFIX}/${LIB_INSTALL_DIR}/python${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR}/site-packages)
     configure_file (${CMAKE_CURRENT_SOURCE_DIR}/doxy/conf.py.in ${CMAKE_CURRENT_BINARY_DIR}/pydoc/conf.py @ONLY)
     configure_file (${CMAKE_CURRENT_SOURCE_DIR}/doxy/index.rst ${CMAKE_CURRENT_BINARY_DIR}/pydoc/index.rst COPYONLY)
     add_custom_target (pydoc ALL
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 3f587f08..812d82c7 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -174,8 +174,11 @@ if (SWIG_FOUND)
   if (BUILDSWIGPYTHON)
     if(NOT PYTHONLIBS_FOUND)
       find_package (PythonLibs ${PYTHONBUILD_VERSION} REQUIRED)
+      string (REPLACE "." ";" PYTHON_VERSION_LIST ${PYTHONLIBS_VERSION_STRING})
+      list (GET PYTHON_VERSION_LIST 0 PYTHON_VERSION_MAJOR)
+      list (GET PYTHON_VERSION_LIST 1 PYTHON_VERSION_MINOR)
     endif()
-  endif()
+  endif(BUILDSWIGPYTHON)
   if (BUILDSWIGNODE)
     if(NOT NODE_FOUND)
       find_package(Node)