diff --git a/src/epub/content.opf b/src/epub/content.opf
index a88d33b..3ae0c44 100644
--- a/src/epub/content.opf
+++ b/src/epub/content.opf
@@ -20,7 +20,6 @@
 		<meta property="schema:accessMode">textual</meta>
 		<meta property="schema:accessModeSufficient">textual</meta>
 		<meta property="schema:accessibilityFeature">alternativeText</meta>
-		<meta property="schema:accessibilityFeature">longDescription</meta>
 		<meta property="schema:accessibilityFeature">readingOrder</meta>
 		<meta property="schema:accessibilityFeature">structuralNavigation</meta>
 		<meta property="schema:accessibilityFeature">tableOfContents</meta>