diff --git a/studio/backend/core/inference/diffusion.py b/studio/backend/core/inference/diffusion.py
index 2f60d70300..57268291b0 100644
--- a/studio/backend/core/inference/diffusion.py
+++ b/studio/backend/core/inference/diffusion.py
@@ -208,9 +208,7 @@ def _resolve_local_gguf_child(repo_root: Path, gguf_filename: str) -> Path:
         or gguf_filename.startswith(("/", "\\"))
         or "\\" in gguf_filename
     ):
-        raise RuntimeError(
-            "gguf_filename must be a relative file path inside repo_id."
-        )
+        raise RuntimeError("gguf_filename must be a relative file path inside repo_id.")
     rel = PurePosixPath(gguf_filename)
     if any(part in ("", ".", "..") for part in rel.parts):
         raise RuntimeError(