diff --git a/build-libcxx.sh b/build-libcxx.sh
index daebaf0..b1a65fe 100755
--- a/build-libcxx.sh
+++ b/build-libcxx.sh
@@ -99,7 +99,6 @@ for arch in $ARCHS; do
         -DLIBCXX_USE_COMPILER_RT=ON \
         -DLIBCXX_ENABLE_SHARED=$BUILD_SHARED \
         -DLIBCXX_ENABLE_STATIC=$BUILD_STATIC \
-        -DLIBCXX_ENABLE_EXPERIMENTAL_LIBRARY=OFF \
         -DLIBCXX_ENABLE_STATIC_ABI_LIBRARY=TRUE \
         -DLIBCXX_CXX_ABI=libcxxabi \
         -DLIBCXX_LIBDIR_SUFFIX="" \