diff --git a/sites/royalroad.py b/sites/royalroad.py
index f80a077..465fbfc 100644
--- a/sites/royalroad.py
+++ b/sites/royalroad.py
@@ -100,7 +100,7 @@ class RoyalRoad(Site):
                     link.string = spoiler_title
             else:
                 link = spoiler_title and f'[SPOILER: {spoiler_title}]' or '[SPOILER]'
-            new_spoiler = self._new_tag('div')
+            new_spoiler = self._new_tag('div', class_="leech-spoiler")
             new_spoiler.append(link)
             spoiler.replace_with(new_spoiler)
 
diff --git a/sites/xenforo.py b/sites/xenforo.py
index ed44b51..e3fd145 100644
--- a/sites/xenforo.py
+++ b/sites/xenforo.py
@@ -281,7 +281,7 @@ class XenForo(Site):
                     link = f'[SPOILER: {spoiler_title.get_text()}]'
                 else:
                     link = '[SPOILER]'
-            new_spoiler = self._new_tag('div')
+            new_spoiler = self._new_tag('div', class_="leech-spoiler")
             new_spoiler.append(link)
             spoiler.replace_with(new_spoiler)
 
diff --git a/sites/xenforo2.py b/sites/xenforo2.py
index bc9398c..a438cd3 100644
--- a/sites/xenforo2.py
+++ b/sites/xenforo2.py
@@ -49,7 +49,7 @@ class XenForo2(XenForo):
                     link = f'[SPOILER: {spoiler_title.get_text()}]'
                 else:
                     link = '[SPOILER]'
-            new_spoiler = self._new_tag('div')
+            new_spoiler = self._new_tag('div', class_="leech-spoiler")
             new_spoiler.append(link)
             spoiler.replace_with(new_spoiler)