diff --git a/gallery_dl/extractor/twitter.py b/gallery_dl/extractor/twitter.py
index 48849f4b..de5182da 100644
--- a/gallery_dl/extractor/twitter.py
+++ b/gallery_dl/extractor/twitter.py
@@ -2029,7 +2029,9 @@ class TwitterAPI():
                     cursor = cursor.get("value")
 
             if pinned_tweet is not None:
-                if pinned := extr._user_obj["legacy"].get(
+                if extr._user_obj is None:
+                    pinned = None
+                elif pinned := extr._user_obj["legacy"].get(
                         "pinned_tweet_ids_str"):
                     pinned = f"-tweet-{pinned[0]}"
                     for idx, entry in enumerate(tweets):