diff --git a/sgl-kernel/CMakeLists.txt b/sgl-kernel/CMakeLists.txt
index 2565e640a..09ec8b00f 100644
--- a/sgl-kernel/CMakeLists.txt
+++ b/sgl-kernel/CMakeLists.txt
@@ -330,7 +330,10 @@ endif()
 set(MSCCLPP_USE_CUDA ON)
 set(MSCCLPP_BYPASS_GPU_CHECK ON)
 set(MSCCLPP_BUILD_TESTS OFF)
-add_subdirectory(${repo-mscclpp_SOURCE_DIR})
+add_subdirectory(
+    ${repo-mscclpp_SOURCE_DIR}
+    ${CMAKE_CURRENT_BINARY_DIR}/mscclpp-build
+)
 target_link_libraries(common_ops PRIVATE ${TORCH_LIBRARIES} c10 cuda cublas cublasLt mscclpp_static)
 
 # flash attention