diff --git a/Modules/ExternalProject.cmake b/Modules/ExternalProject.cmake
index 755b4fb87..44bf9570f 100644
--- a/Modules/ExternalProject.cmake
+++ b/Modules/ExternalProject.cmake
@@ -993,6 +993,7 @@ endif()
 #
 message(STATUS \"extracting... [analysis]\")
 file(GLOB contents \"\${ut_dir}/*\")
+list(REMOVE_ITEM contents \"\${ut_dir}/.DS_Store\")
 list(LENGTH contents n)
 if(NOT n EQUAL 1 OR NOT IS_DIRECTORY \"\${contents}\")
   set(contents \"\${ut_dir}\")