diff --git a/mapscript/python/CMakeLists.txt b/mapscript/python/CMakeLists.txt
index 33945b2..a14c246 100644
--- a/mapscript/python/CMakeLists.txt
+++ b/mapscript/python/CMakeLists.txt
@@ -34,7 +34,14 @@ SWIG_ADD_MODULE(pythonmapscript python ../mapscript.i pygdioctx/pygdioctx.c)
 SWIG_LINK_LIBRARIES(pythonmapscript ${PYTHON_LIBRARIES} ${MAPSERVER_LIBMAPSERVER})
 
 set_target_properties(${SWIG_MODULE_pythonmapscript_REAL_NAME} PROPERTIES PREFIX "")
-set_target_properties(${SWIG_MODULE_pythonmapscript_REAL_NAME} PROPERTIES OUTPUT_NAME _mapscript)
+set_target_properties(${SWIG_MODULE_pythonmapscript_REAL_NAME} PROPERTIES OUTPUT_NAME python_mapscript)
+
+if(NOT APPLE)
+   set_target_properties(${SWIG_MODULE_pythonmapscript_REAL_NAME} PROPERTIES
+      VERSION ${MapServer_VERSION_STRING}
+      SOVERSION ${MapServer_SOVERSION}
+   )
+endif(NOT APPLE)
 
 
 execute_process ( COMMAND ${PYTHON_EXECUTABLE} -c "from distutils.sysconfig import get_python_lib; print get_python_lib(True)" OUTPUT_VARIABLE PYTHON_SITE_PACKAGES OUTPUT_STRIP_TRAILING_WHITESPACE)