diff --git a/web_atoms/local_names.txt b/web_atoms/local_names.txt
index 5b6eb073..2ac3fbc3 100644
--- a/web_atoms/local_names.txt
+++ b/web_atoms/local_names.txt
@@ -20,6 +20,7 @@ align
 alignment-baseline
 alignmentscope
 alink
+allow
 allowfullscreen
 alphabetic
 alt