diff --git a/readium/opds/src/main/java/org/readium/r2/opds/OPDS1Parser.kt b/readium/opds/src/main/java/org/readium/r2/opds/OPDS1Parser.kt
index e8991f53e8..15cffc5e6f 100644
--- a/readium/opds/src/main/java/org/readium/r2/opds/OPDS1Parser.kt
+++ b/readium/opds/src/main/java/org/readium/r2/opds/OPDS1Parser.kt
@@ -81,7 +81,7 @@ public class OPDS1Parser {
             ReplaceWith("parse(jsonData, url.toUrl()!!)"),
             DeprecationLevel.ERROR
         )
-        public fun parse(jsonData: ByteArray, url: URL): ParseData =
+        public fun parse(xmlData: ByteArray, url: URL): ParseData =
             throw NotImplementedError()
 
         private fun parseFeed(root: ElementNode, url: Url): Feed {