diff --git a/.github/workflows/sunnypilot-build-prebuilt.yaml b/.github/workflows/sunnypilot-build-prebuilt.yaml
index 3966d1a6c..79cb5e3d6 100644
--- a/.github/workflows/sunnypilot-build-prebuilt.yaml
+++ b/.github/workflows/sunnypilot-build-prebuilt.yaml
@@ -185,7 +185,7 @@ jobs:
           echo "Building sunnypilot's locationd..."
           scons -j2 cache_dir=${{env.SCONS_CACHE_DIR}} --minimal sunnypilot/selfdrive/locationd
           echo "Building openpilot's locationd..."
-          scons -j$(nproc) cache_dir=${{env.SCONS_CACHE_DIR}} --minimal selfdrive/locationd
+          scons -j1 cache_dir=${{env.SCONS_CACHE_DIR}} --minimal selfdrive/locationd
           echo "Building rest of sunnypilot"
           scons -j$(nproc) cache_dir=${{env.SCONS_CACHE_DIR}} --minimal
           touch ${BUILD_DIR}/prebuilt
diff --git a/sunnypilot/selfdrive/locationd/SConscript b/sunnypilot/selfdrive/locationd/SConscript
index 27cd4d5b4..3e71f3678 100644
--- a/sunnypilot/selfdrive/locationd/SConscript
+++ b/sunnypilot/selfdrive/locationd/SConscript
@@ -14,13 +14,6 @@ live_ekf = env.RednoseCompileFilter(
   extra_gen_artifacts=['live_kf_constants.h'],
   gen_script_deps=rednose_gen_deps,
 )
-car_ekf = env.RednoseCompileFilter(
-  target='car',
-  filter_gen_script='models/car_kf.py',
-  output_dir=rednose_gen_dir,
-  extra_gen_artifacts=[],
-  gen_script_deps=rednose_gen_deps,
-)
 
 # locationd build
 locationd_sources = ["locationd.cc", "models/live_kf.cc"]