diff --git a/llvm/CMakeLists.txt b/llvm/CMakeLists.txt
index fb71c27d..e6b62065 100644
--- a/llvm/CMakeLists.txt
+++ b/llvm/CMakeLists.txt
@@ -80,8 +80,6 @@ if (ENABLE_LLVM)
       CMAKE_ARGS
       -C ${CMAKE_CURRENT_SOURCE_DIR}/llvm_targets.cmake
       -DCMAKE_BUILD_TYPE=Release
-      $<$<BOOL:${ZLIB_TARGET}>:-DZ_PREFIX=ON>
-      $<$<BOOL:${ZLIB_TARGET}>:-DZ_PREFIX_STR=${Z_PREFIX_STR}>
       -DZLIB_ROOT=$<$<BOOL:${ZLIB_TARGET}>:${CMAKE_BUNDLE_INSTALL_PREFIX}>
       -DLLVM_BUILD_DOCS=OFF
       -DLLVM_BUILD_EXAMPLES=OFF