diff --git a/studio/backend/core/inference/llama_cpp.py b/studio/backend/core/inference/llama_cpp.py
index 0ab6716cac..ee04a91e85 100644
--- a/studio/backend/core/inference/llama_cpp.py
+++ b/studio/backend/core/inference/llama_cpp.py
@@ -6158,7 +6158,6 @@ class LlamaCppBackend:
         isolated, mirroring the reaper's custom-root isolation)."""
         try:
             from utils.paths.storage_roots import studio_root  # noqa: WPS433
-
             return studio_root() / "llama-server.pid"
         except Exception:
             return None
@@ -6193,7 +6192,6 @@ class LlamaCppBackend:
         uncertainty so an unrelated process is never killed."""
         try:
             import psutil
-
             try:
                 proc = psutil.Process(pid)
                 if (proc.name() or "").lower().startswith("llama-server"):
diff --git a/studio/backend/main.py b/studio/backend/main.py
index a126066e35..0b119055e2 100644
--- a/studio/backend/main.py
+++ b/studio/backend/main.py
@@ -482,7 +482,6 @@ async def lifespan(app: FastAPI):
         # Mirror run.py's _graceful_shutdown step 5 so a direct-uvicorn shutdown
         # (which bypasses the signal handler) also kills the GPU child.
         from routes.inference import _llama_cpp_backend
-
         if _llama_cpp_backend is not None:
             _llama_cpp_backend._kill_process()
 
diff --git a/studio/backend/tests/test_llama_cpp_wait_for_vram_settle.py b/studio/backend/tests/test_llama_cpp_wait_for_vram_settle.py
index 1eabd9b5cf..fd7d9199b4 100644
--- a/studio/backend/tests/test_llama_cpp_wait_for_vram_settle.py
+++ b/studio/backend/tests/test_llama_cpp_wait_for_vram_settle.py
@@ -463,9 +463,7 @@ def test_reap_recorded_pid_skips_pid_reuse(tmp_path):
     try:
         with (
             patch.object(LlamaCppBackend, "_server_pidfile_path", staticmethod(lambda: pidfile)),
-            patch.object(
-                LlamaCppBackend, "_pid_is_llama_server", staticmethod(lambda pid: False)
-            ),
+            patch.object(LlamaCppBackend, "_pid_is_llama_server", staticmethod(lambda pid: False)),
         ):
             n = LlamaCppBackend._reap_recorded_pid()
         assert n == 0