diff --git a/RequestLogger.py b/RequestLogger.py
index fa94b05..7ae4d43 100644
--- a/RequestLogger.py
+++ b/RequestLogger.py
@@ -146,7 +146,7 @@ class FSCLogger:
                     self.return_and_exit(Response(id=request.id, error="invalid config (missing required field(s) '{}'"
                                                                        ")".format(', '.join(missing_fields))))
                 # validate fields
-                if len(conf['logfile']) == "":
+                if conf['logfile'] == "":
                     invalid_fields.append('logfile')
                 else:
                     try: