diff --git a/youtube_dl/extractor/academicearth.py b/youtube_dl/extractor/academicearth.py
index 5045e7332..c450c30ca 100644
--- a/youtube_dl/extractor/academicearth.py
+++ b/youtube_dl/extractor/academicearth.py
@@ -9,7 +9,7 @@ from ..utils import (
 
 
 class AcademicEarthCourseIE(InfoExtractor):
-    _VALID_URL = r'^https?://(?:www\.)?academicearth\.org/courses/(?P<id>[^?#/]+)'
+    _VALID_URL = r'^https?://(?:www\.)?academicearth\.org/(?:courses|playlists)/(?P<id>[^?#/]+)'
     IE_NAME = u'AcademicEarth:Course'
 
     def _real_extract(self, url):