diff --git a/html5lib/constants.py b/html5lib/constants.py
index 975aa021..70a80b23 100644
--- a/html5lib/constants.py
+++ b/html5lib/constants.py
@@ -423,7 +423,7 @@
 ])
 
 htmlIntegrationPointElements = frozenset([
-    (namespaces["mathml"], "annotaion-xml"),
+    (namespaces["mathml"], "annotation-xml"),
     (namespaces["svg"], "foreignObject"),
     (namespaces["svg"], "desc"),
     (namespaces["svg"], "title")