diff --git a/studio/backend/core/inference/sd_cpp_backend.py b/studio/backend/core/inference/sd_cpp_backend.py
index 3fbad30571..f82335e385 100644
--- a/studio/backend/core/inference/sd_cpp_backend.py
+++ b/studio/backend/core/inference/sd_cpp_backend.py
@@ -497,7 +497,12 @@ class SdCppDiffusionBackend:
                     raise RuntimeError("Diffusion generation was cancelled.")
                 # ``seeds`` is the per-image seed (each sd-cli run used seed+index), so
                 # the route can persist the real seed for every image in the batch.
-                return {"images": images, "seed": int(seed), "seeds": seeds, "repo_id": state.repo_id}
+                return {
+                    "images": images,
+                    "seed": int(seed),
+                    "seeds": seeds,
+                    "repo_id": state.repo_id,
+                }
             except SdCppCancelled as exc:
                 raise RuntimeError("Diffusion generation was cancelled.") from exc
             finally:
diff --git a/studio/backend/routes/inference.py b/studio/backend/routes/inference.py
index 1363dca458..15c46d4132 100644
--- a/studio/backend/routes/inference.py
+++ b/studio/backend/routes/inference.py
@@ -10148,7 +10148,11 @@ async def generate_diffusion_image(
     def _persist() -> list[dict]:
         records = []
         for index, image in enumerate(result["images"]):
-            seed = per_image_seeds[index] if per_image_seeds and index < len(per_image_seeds) else result["seed"]
+            seed = (
+                per_image_seeds[index]
+                if per_image_seeds and index < len(per_image_seeds)
+                else result["seed"]
+            )
             records.append(
                 image_gallery.save(
                     image,