diff --git a/build-compiler-rt.sh b/build-compiler-rt.sh
index 04627e8..68ff1f8 100755
--- a/build-compiler-rt.sh
+++ b/build-compiler-rt.sh
@@ -113,6 +113,7 @@ for arch in $ARCHS; do
         -DCOMPILER_RT_DEFAULT_TARGET_ONLY=TRUE \
         -DCOMPILER_RT_USE_BUILTINS_LIBRARY=TRUE \
         -DCOMPILER_RT_BUILD_BUILTINS=$BUILD_BUILTINS \
+        -DCOMPILER_RT_EXCLUDE_ATOMIC_BUILTIN=FALSE \
         -DLLVM_CONFIG_PATH="" \
         -DCMAKE_FIND_ROOT_PATH=$PREFIX/$arch-w64-mingw32 \
         -DCMAKE_FIND_ROOT_PATH_MODE_INCLUDE=ONLY \