diff --git a/CMakeLists.txt b/CMakeLists.txt
index a698805658de7e7362ffb0992cccf36987ee39d7..f445c50b5dd122bfa2d5099f04571c6b6aa277f1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -709,7 +709,6 @@ if(UNIX)
   # find files existing at configuration time)
   add_custom_target(purge 
                     COMMAND rm -f `find . -name *~ -o -name *~~`
-                    COMMAND rm -f `find . -name .DS_Store -o -name debug?.pos`
                     WORKING_DIRECTORY ${CMAKE_SOURCE_DIR})
   add_custom_target(etags 
                     COMMAND etags `find . -name *.cpp -o -name *.h -o -name *.y`