diff --git a/gallery_dl/extractor/bunkr.py b/gallery_dl/extractor/bunkr.py
index 100aef3a..882c2b3d 100644
--- a/gallery_dl/extractor/bunkr.py
+++ b/gallery_dl/extractor/bunkr.py
@@ -68,12 +68,12 @@ class BunkrAlbumExtractor(LolisafeAlbumExtractor):
                 "count"      : len(files),
             }
 
-        headers = {"Referer": root.replace("://", "://stream.", 1)}
+        headers = {"Referer": root.replace("://", "://stream.", 1) + "/"}
         for file in files:
             if file["file"].endswith(
                     (".mp4", ".m4v", ".mov", ".webm", ".zip", ".rar", ".7z")):
                 file["_http_headers"] = headers
                 file["file"] = file["file"].replace(
-                    "//cdn", "//media-files", 1)
+                    "://cdn", "://media-files", 1)
 
         return files, data
diff --git a/gallery_dl/extractor/soundgasm.py b/gallery_dl/extractor/soundgasm.py
index 4bd2bcbd..1afb92c5 100644
--- a/gallery_dl/extractor/soundgasm.py
+++ b/gallery_dl/extractor/soundgasm.py
@@ -19,7 +19,7 @@ class SoundgasmAudioExtractor(Extractor):
     root = "https://soundgasm.net"
     directory_fmt = ("{category}", "{user}")
     filename_fmt = "{title}.{extension}"
-    archive_fmt = "{user}_{filename}"
+    archive_fmt = "{user}_{slug}"
     pattern = (r"(?:https?://)?(?:www\.)?soundgasm\.net"
                r"/u(?:ser)?/([^/?#]+)/([^/?#]+)")
     test = (
diff --git a/gallery_dl/extractor/twitter.py b/gallery_dl/extractor/twitter.py
index d0411acf..2c06bb0a 100644
--- a/gallery_dl/extractor/twitter.py
+++ b/gallery_dl/extractor/twitter.py
@@ -886,7 +886,7 @@ class TwitterBackgroundExtractor(TwitterExtractor):
 
     def tweets(self):
         self.api._user_id_by_screen_name(self.user)
-        user = user = self._user_obj
+        user = self._user_obj
 
         try:
             url = user["legacy"]["profile_banner_url"]
diff --git a/gallery_dl/formatter.py b/gallery_dl/formatter.py
index 5fe7f32a..8a45330c 100644
--- a/gallery_dl/formatter.py
+++ b/gallery_dl/formatter.py
@@ -218,7 +218,7 @@ class ModuleFormatter():
 
 
 class FStringFormatter():
-    """Generate text by evaluaring an f-string literal"""
+    """Generate text by evaluating an f-string literal"""
 
     def __init__(self, fstring, default=NONE, fmt=None):
         self.format_map = util.compile_expression("f'''" + fstring + "'''")