diff --git a/gallery_dl/extractor/kissmanga.py b/gallery_dl/extractor/kissmanga.py
index cfb53336561..519dc9731b8 100644
--- a/gallery_dl/extractor/kissmanga.py
+++ b/gallery_dl/extractor/kissmanga.py
@@ -24,10 +24,10 @@ class KissmangaBase():
 
     def request(self, url):
         response = super().request(url)
-        if response.history and "/Message/AreYouHuman?" in response.url:
-            self.log.error("Requesting too many pages caused a redirect to %s."
-                           " Try visiting this URL in your browser and solve"
-                           " the CAPTCHA to continue.", response.url)
+        if response.history and "/AreYouHuman" in response.url:
+            self.log.error("Redirect to \n%s\n"
+                           "Visit this URL in your browser and solve "
+                           "the CAPTCHA to continue.", response.url)
             raise exception.StopExtraction()
         return response
 
diff --git a/gallery_dl/extractor/readcomiconline.py b/gallery_dl/extractor/readcomiconline.py
index 98bdcddb963..06b202ba158 100644
--- a/gallery_dl/extractor/readcomiconline.py
+++ b/gallery_dl/extractor/readcomiconline.py
@@ -9,7 +9,7 @@
 """Extract comic-issues and entire comics from https://readcomiconline.to/"""
 
 from .common import ChapterExtractor, MangaExtractor
-from .. import text
+from .. import text, exception
 import re
 
 
@@ -21,6 +21,15 @@ class ReadcomiconlineBase():
     archive_fmt = "{issue_id}_{page}"
     root = "https://readcomiconline.to"
 
+    def request(self, url):
+        response = super().request(url)
+        if response.history and "/AreYouHuman" in response.url:
+            self.log.error("Redirect to \n%s\n"
+                           "Visit this URL in your browser and solve "
+                           "the CAPTCHA to continue.", response.url)
+            raise exception.StopExtraction()
+        return response
+
 
 class ReadcomiconlineIssueExtractor(ReadcomiconlineBase, ChapterExtractor):
     """Extractor for comic-issues from readcomiconline.to"""
@@ -49,7 +58,6 @@ def metadata(self, page):
         }
 
     def images(self, page):
-        self.session.headers["Referer"] = None
         return [
             (url, None)
             for url in text.extract_iter(
diff --git a/gallery_dl/extractor/smugmug.py b/gallery_dl/extractor/smugmug.py
index 705ed30376f..80348ae0764 100644
--- a/gallery_dl/extractor/smugmug.py
+++ b/gallery_dl/extractor/smugmug.py
@@ -111,13 +111,13 @@ class SmugmugImageExtractor(SmugmugExtractor):
     test = (
         ("https://acapella.smugmug.com/Micro-Macro/Drops/i-g2Dmf9z", {
             "url": "78f0bf3516b6d670b7319216bdeccb35942ca4cf",
-            "keyword": "008a29d6e90729ef7639617db6c049ecb1d0ab54",
+            "keyword": "b298ef7ed2b1918263b6a7dc6f56e54401584381",
             "content": "64a8f69a1d824921eebbdf2420087937adfa45cd",
         }),
         # video
         ("https://tstravels.smugmug.com/Dailies/Daily-Dose-2015/i-39JFNzB", {
             "url": "04d0ab1ff829ca7d78f5acb5548953df08e9a5ee",
-            "keyword": "cafec30861ac7569b12a2a6b671b4b5ce273b370",
+            "keyword": "c708c4b9527a2fb29396c19f7628f9cf4b0b3a39",
         }),
     )