diff --git a/gns3server/logger.py b/gns3server/logger.py
index 592d9ada..74cd2093 100644
--- a/gns3server/logger.py
+++ b/gns3server/logger.py
@@ -111,7 +111,7 @@ class LogFilter:
     """
 
     def filter(record):
-        if "/settings" in record.msg and "200" in record.msg:
+        if isinstance(record.msg, str) and "/settings" in record.msg and "200" in record.msg:
             return 0
         return 1