diff --git a/twint/format.py b/twint/format.py
index 334b43a..3eeb8c2 100644
--- a/twint/format.py
+++ b/twint/format.py
@@ -29,7 +29,10 @@ def Tweet(config, t):
         output = output.replace("{quote_url}", t.quote_url)
         output = output.replace("{near}", t.near)
         output = output.replace("{geo}", t.geo)
-        output = output.replace("{mentions}", ",".join(t.mentions))
+        output = output.replace("{mentions}",
+                                ",".join(map(lambda x: x.get("screen_name",
+                                                             None),
+                                            t.mentions)))
         output = output.replace("{translate}", t.translate)
         output = output.replace("{trans_src}", t.trans_src)
         output = output.replace("{trans_dest}", t.trans_dest)