diff --git a/lib/newfol/main.py b/lib/newfol/main.py
index ee0a702..43fb864 100644
--- a/lib/newfol/main.py
+++ b/lib/newfol/main.py
@@ -34,7 +34,7 @@ def log(*args):
         return
     if logfd is None:
         logfd = open(path, "w")
-    logfd.write(" ".join(*args))
+    logfd.write(" ".join(map(str, args)))
     logfd.flush()