diff --git a/clang/CMakeLists.txt b/clang/CMakeLists.txt
index 6a722045fbc9b..1fff005d65251 100644
--- a/clang/CMakeLists.txt
+++ b/clang/CMakeLists.txt
@@ -804,7 +804,6 @@ if (CLANG_ENABLE_BOOTSTRAP)
                                    --config ${build_configuration}
                                    ${build_tool_args}
     INSTALL_COMMAND ""
-    DOWNLOAD_COMMAND ""
     STEP_TARGETS configure build
     USES_TERMINAL_CONFIGURE 1
     USES_TERMINAL_BUILD 1
@@ -916,7 +915,6 @@ if (CLANG_BOLT_INSTRUMENT AND NOT LLVM_BUILD_INSTRUMENTED)
                                    --config ${build_configuration}
                                    --target ${CLANG_BOLT_INSTRUMENT_TARGETS}
     INSTALL_COMMAND ""
-    DOWNLOAD_COMMAND ""
     STEP_TARGETS configure build
     USES_TERMINAL_CONFIGURE 1
     USES_TERMINAL_BUILD 1
diff --git a/compiler-rt/cmake/Modules/AddCompilerRT.cmake b/compiler-rt/cmake/Modules/AddCompilerRT.cmake
index 13bbcf20f517f..2771a4063c1df 100644
--- a/compiler-rt/cmake/Modules/AddCompilerRT.cmake
+++ b/compiler-rt/cmake/Modules/AddCompilerRT.cmake
@@ -698,7 +698,6 @@ macro(add_custom_libcxx name prefix)
                -DLIBCXX_ENABLE_STATIC_ABI_LIBRARY=ON
                ${LIBCXX_CMAKE_ARGS}
     INSTALL_COMMAND ""
-    DOWNLOAD_COMMAND ""
     STEP_TARGETS configure build
     BUILD_ALWAYS 1
     USES_TERMINAL_CONFIGURE 1