diff --git a/files/helpers/regex.py b/files/helpers/regex.py
index d1c7678e6..2f47926e0 100644
--- a/files/helpers/regex.py
+++ b/files/helpers/regex.py
@@ -107,9 +107,10 @@ video_sub_regex = re.compile(f'(?<!")(https:\/\/({hosts})\/[\w:~,()\-.#&\/=?@%;+
 
 def video_sub_regex_matcher(match):
 	url = match.group(1)
-	posterurl = g.posterurls.get(url)
-	if posterurl:
-		return 	f'<p class="resizable"><video poster="{posterurl}" controls preload="none" src="{url}"></video></p>'
+	if hasattr(g, 'posterurls'):
+		posterurl = g.posterurls.get(url)
+		if posterurl:
+			return 	f'<p class="resizable"><video poster="{posterurl}" controls preload="none" src="{url}"></video></p>'
 	return f'<p class="resizable"><video controls preload="none" src="{url}"></video></p>'
 
 audio_regex_extensions = '|'.join(AUDIO_FORMATS)