diff --git a/build/cmake/CMakeModules/AddZstdCompilationFlags.cmake b/build/cmake/CMakeModules/AddZstdCompilationFlags.cmake
index 7adca875..8835d1c6 100644
--- a/build/cmake/CMakeModules/AddZstdCompilationFlags.cmake	2019-11-04 17:54:32.000000000 +0000
+++ b/build/cmake/CMakeModules/AddZstdCompilationFlags.cmake	2020-09-09 20:54:13.817515706 +0000
@@ -52,7 +52,6 @@
              CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
         if( ${flag_var} )
             separate_arguments(${flag_var})
-            list(REMOVE_DUPLICATES ${flag_var})
             string(REPLACE ";" " " ${flag_var} "${${flag_var}}")
         endif()
     endforeach ()