diff --git a/src/python/jw/pkg/lib/log.py b/src/python/jw/pkg/lib/log.py
index 8aa6d148..98f0f4e3 100644
--- a/src/python/jw/pkg/lib/log.py
+++ b/src/python/jw/pkg/lib/log.py
@@ -175,8 +175,8 @@ def get_caller_pos(up: int = 1,
 def log_m(prio: int, *args, **kwargs) -> None:  # export
     if prio > _level:
         return
+    margs = ''
     if len(args):
-        margs = ''
         for a in args:
             if isinstance(a, list):
                 margs += '\n'.join([str(elem) for elem in a])