diff --git a/scripts/normalize_legacy.py b/scripts/normalize_legacy.py
index f4016cb..e8bb1b3 100644
--- a/scripts/normalize_legacy.py
+++ b/scripts/normalize_legacy.py
@@ -312,7 +312,7 @@ def main() -> None:
         json.dumps(report, ensure_ascii=False, indent=2) + "\n",
         encoding="utf-8",
     )
-    print(json.dumps(report, ensure_ascii=False, indent=2))
+    print("Legacy normalization completed; details are available in the report.")
 
 
 if __name__ == "__main__":
diff --git a/tests/test_integrity.py b/tests/test_integrity.py
index 0b1af41..46f88e9 100644
--- a/tests/test_integrity.py
+++ b/tests/test_integrity.py
@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 import json
+import subprocess
 import sys
 import tempfile
 import unittest
@@ -196,6 +197,33 @@ def test_source_checksum_gate_rejects_modified_input(self) -> None:
                     istat_path=DEFAULT_ISTAT,
                 )
 
+    def test_legacy_normalization_does_not_log_report_data(self) -> None:
+        with tempfile.TemporaryDirectory() as directory:
+            output = Path(directory) / "normalized.csv"
+            report = Path(directory) / "report.json"
+            result = subprocess.run(
+                [
+                    sys.executable,
+                    str(ROOT / "scripts" / "normalize_legacy.py"),
+                    "--output",
+                    str(output),
+                    "--report",
+                    str(report),
+                ],
+                check=True,
+                capture_output=True,
+                text=True,
+            )
+            self.assertEqual(
+                result.stdout,
+                "Legacy normalization completed; "
+                "details are available in the report.\n",
+            )
+            self.assertTrue(output.is_file())
+            self.assertTrue(report.is_file())
+            self.assertNotIn("legacy_uuid", result.stdout)
+            self.assertNotIn("corrections", result.stdout)
+
 
 if __name__ == "__main__":
     unittest.main()