diff --git a/src/bakrest/backup.py b/src/bakrest/backup.py
index 9e3d594..11e591d 100644
--- a/src/bakrest/backup.py
+++ b/src/bakrest/backup.py
@@ -186,7 +186,7 @@ def _run_robocopy(
             command = _build_robocopy_command(config, event, destination_root)
             logger.info("Running robocopy command: %s", _redact_command(command))
             try:
-                completed = subprocess.run(command, capture_output=True, text=True, check=False)
+                completed = _run_command(command)
             except OSError as exc:
                 message = f"Errore avvio robocopy: {exc}"
                 logger.exception(message)
@@ -223,7 +223,7 @@ def _run_rsync(config: AppConfig, events: list[ChangeEvent], logger: logging.Log
         command = _build_rsync_command(config, events)
         files_from_path = _extract_files_from_path(command)
         logger.info("Running rsync command: %s", _redact_command(command))
-        completed = subprocess.run(command, capture_output=True, text=True, check=False)
+        completed = _run_command(command)
     except OSError as exc:
         message = f"Errore avvio rsync: {exc}"
         logger.exception(message)
@@ -340,3 +340,14 @@ def _source_arg(path: Path) -> str:
 
 def _redact_command(command: list[str]) -> str:
     return " ".join(command)
+
+
+def _run_command(command: list[str]) -> subprocess.CompletedProcess[str]:
+    return subprocess.run(
+        command,
+        capture_output=True,
+        text=True,
+        encoding="utf-8",
+        errors="replace",
+        check=False,
+    )
diff --git a/tests/test_backup.py b/tests/test_backup.py
index c61e762..faf6518 100644
--- a/tests/test_backup.py
+++ b/tests/test_backup.py
@@ -7,6 +7,7 @@ from bakrest.backup import (
     _build_robocopy_command,
     _build_rsync_command,
     _robocopy_destination_dir,
+    _run_command,
     _run_robocopy,
     _split_existing_files,
 )
@@ -146,7 +147,7 @@ def test_robocopy_marks_each_file_copied_after_all_destinations(
 
     pending_counts_after_commands: list[int] = []
 
-    def fake_run(command, capture_output, text, check):
+    def fake_run(command, **kwargs):
         pending_counts_after_commands.append(registry.pending_count())
         return subprocess.CompletedProcess(command, 0, stdout="", stderr="")
 
@@ -172,3 +173,19 @@ class _NullLogger:
 
     def exception(self, *args, **kwargs) -> None:
         pass
+
+
+def test_run_command_uses_lossy_utf8_decoding(monkeypatch) -> None:
+    calls = {}
+
+    def fake_run(*args, **kwargs):
+        calls.update(kwargs)
+        return subprocess.CompletedProcess(args[0], 0, stdout="", stderr="")
+
+    monkeypatch.setattr("bakrest.backup.subprocess.run", fake_run)
+
+    _run_command(["robocopy"])
+
+    assert calls["encoding"] == "utf-8"
+    assert calls["errors"] == "replace"
+    assert calls["text"] is True