--- CMakeLists.txt.old	2014-08-22 17:03:01.000000000 +0200
+++ CMakeLists.txt	2014-08-22 17:04:08.000000000 +0200
@@ -404,7 +404,7 @@
 
 # Python 
 if (BUILD_PYTHON_BINDINGS)
-  install(CODE "execute_process(COMMAND ${PYTHON_EXE} \"setup.py\" \"install\" \"--prefix=${CMAKE_INSTALL_PREFIX}\"  WORKING_DIRECTORY \"python\")")
+  install(CODE "execute_process(COMMAND ${PYTHON_EXE} \"setup.py\" \"install\" \"--prefix=${PYTHON_INSTALL_PREFIX}\"  WORKING_DIRECTORY \"python\")")
 endif(BUILD_PYTHON_BINDINGS)
 
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