diff --git a/scripts/normalize-code-blocks.py b/scripts/normalize-code-blocks.py
index 32f63318..1bb978c2 100644
--- a/scripts/normalize-code-blocks.py
+++ b/scripts/normalize-code-blocks.py
@@ -33,14 +33,11 @@ def normalize_code_block(match: re.Match) -> str:
     code = match.group("code")
     close_tag = match.group("close")
 
-    # Skip empty blocks
     if not code.strip():
         return match.group(0)
 
-    # Dedent the code
     dedented = textwrap.dedent(code)
 
-    # Strip leading/trailing blank lines
     lines = dedented.split("\n")
     while lines and not lines[0].strip():
         lines.pop(0)
@@ -82,7 +79,7 @@ def process_file(filepath: str, dry_run: bool = False) -> dict:
     """Process a single JSONL file. Returns stats dict."""
     path = Path(filepath)
     if not path.exists():
-        return {"file": filepath, "error": "not found", "fixes": 0, "lines": 0}
+        return {"file": str(filepath), "error": "not found", "fixes": 0, "lines": 0}
 
     lines = path.read_text(encoding="utf-8").splitlines()
     fixed_lines = []
@@ -100,7 +97,7 @@ def process_file(filepath: str, dry_run: bool = False) -> dict:
         path.write_text("\n".join(fixed_lines) + "\n", encoding="utf-8")
 
     return {
-        "file": filepath,
+        "file": str(filepath),
         "lines": len(lines),
         "fixes": total_fixes,
         "changed": total_fixes > 0,