diff --git a/sites/spacebattles.py b/sites/spacebattles.py
index fa99928..1c83ddf 100644
--- a/sites/spacebattles.py
+++ b/sites/spacebattles.py
@@ -5,7 +5,7 @@ from bs4 import BeautifulSoup
 
 
 def match(url):
-    return re.match(r'^https?://forums.spacebattles.com/threads/.*\d+/?.*', url)
+    return re.match(r'^https?://forums.(?:spacebattles|sufficientvelocity).com/threads/.*\d+/?.*', url)
 
 def extract(url, fetch):
     page = fetch(url)
diff --git a/sites/spacebattles_indexpost.py b/sites/spacebattles_indexpost.py
index 5a5b181..c2f4679 100644
--- a/sites/spacebattles_indexpost.py
+++ b/sites/spacebattles_indexpost.py
@@ -5,7 +5,7 @@ from bs4 import BeautifulSoup
 
 
 def match(url):
-    return re.match(r'^https?://forums.spacebattles.com/posts/\d+/?.*', url)
+    return re.match(r'^https?://forums.(?:spacebattles|sufficientvelocity).com/posts/\d+/?.*', url)
 
 def extract(url, fetch):
     page = fetch(url)