diff --git a/src/gpodder/util.py b/src/gpodder/util.py
index e640b5ed6..7d99c59b3 100644
--- a/src/gpodder/util.py
+++ b/src/gpodder/util.py
@@ -776,6 +776,10 @@ def __call__(self, document):
         return self.extracter.get_result()
 
     def visit(self, element):
+        # skip functions generated by html5lib for comments in the HTML
+        if callable(element.tag):
+            return
+
         NS = '{http://www.w3.org/1999/xhtml}'
         tag_name = (element.tag[len(NS):] if element.tag.startswith(NS) else element.tag).lower()
         self.extracter.handle_starttag(tag_name, list(element.items()))