diff --git a/pilot/logger/logger.py b/pilot/logger/logger.py
index 7094b30..ecc47d6 100644
--- a/pilot/logger/logger.py
+++ b/pilot/logger/logger.py
@@ -47,7 +47,10 @@ def filter_sensitive_fields(record):
         record.args = tuple(args_list)
 
     # Remove ANSI escape sequences - colours & bold
-    record.msg = re.sub(r'\x1B(?:[@-Z\\-_]|\[[0-?]*[ -/]*[@-~])', '', record.msg)
+    # Peewee passes a tuple as record.msg
+    if isinstance(record.msg, str):
+        record.msg = re.sub(r'\x1B(?:[@-Z\\-_]|\[[0-?]*[ -/]*[@-~])', '', record.msg)
+
     return True