diff --git a/llvm/utils/release/build_llvm_release.bat b/llvm/utils/release/build_llvm_release.bat
index 64ae2d41ab2b02..3508748c1d5404 100755
--- a/llvm/utils/release/build_llvm_release.bat
+++ b/llvm/utils/release/build_llvm_release.bat
@@ -193,6 +193,7 @@ REM Stage0 binaries directory; used in stage1.
 set "stage0_bin_dir=%build_dir%/build32_stage0/bin"
 set cmake_flags=^
   %common_cmake_flags% ^
+  -DLLVM_ENABLE_RPMALLOC=OFF ^
   -DLLDB_TEST_COMPILER=%stage0_bin_dir%/clang.exe ^
   -DPYTHON_HOME=%PYTHONHOME% ^
   -DPython3_ROOT_DIR=%PYTHONHOME% ^