diff --git a/haruhi_dl/extractor/teachable.py b/haruhi_dl/extractor/teachable.py
index df305e38a..3a337afd8 100644
--- a/haruhi_dl/extractor/teachable.py
+++ b/haruhi_dl/extractor/teachable.py
@@ -140,7 +140,7 @@ class TeachableIE(TeachableBaseIE):
@staticmethod
def _is_teachable(webpage):
return 'teachableTracker.linker:autoLink' in webpage and re.search(
- r']+href=["\']https?://process\.fs\.teachablecdn\.com',
+ r']+href=["\']https?://(?:process\.fs|assets)\.teachablecdn\.com',
webpage)
@staticmethod