diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 3d8f33e..b7f5d70 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -180,7 +180,6 @@ jobs:
             UBUNTU_VERSION=${{ matrix.ubuntu }} \
             BASE_IMAGE="${{ matrix.base_image }}" \
             UBUNTU_PORTS_MIRROR="${{ matrix.ports_mirror }}" \
-            CUVSLAM_REQUIRE_CLEAN_SOURCE=1 \
             EXTRA_CMAKE_ARGS="-DCMAKE_CUDA_ARCHITECTURES=${{ matrix.archs }} ${{ matrix.cmake_options }}" \
             ./scripts/build_cuvslam_in_docker.sh Release ./output