diff --git a/deps/llvm/CMakeLists.txt b/deps/llvm/CMakeLists.txt
index 797f4dc1a..473343351 100644
--- a/deps/llvm/CMakeLists.txt
+++ b/deps/llvm/CMakeLists.txt
@@ -49,8 +49,6 @@ ExternalProject_Add(llvm-project
 		-DCMAKE_BUILD_TYPE=Release
 		-DCMAKE_CXX_FLAGS_RELEASE=${CMAKE_CXX_FLAGS_RELEASE}
 		-DCMAKE_CXX_FLAGS_DEBUG=${CMAKE_CXX_FLAGS_DEBUG}
-		-DLLVM_USE_CRT_RELEASE=${RT_TYPE_RELEASE}
-		-DLLVM_USE_CRT_DEBUG=${RT_TYPE_DEBUG}
 
 		# Force Python3.
 		-DPYTHON_EXECUTABLE=${PYTHON_EXECUTABLE}