diff --git a/parsers/src/extdisco.rs b/parsers/src/extdisco.rs
index 2585269e..c95e6537 100644
--- a/parsers/src/extdisco.rs
+++ b/parsers/src/extdisco.rs
@@ -150,7 +150,7 @@ mod tests {
         assert_size!(Transport, 1);
         assert_size!(Restricted, 1);
         assert_size!(Type, 1);
-        assert_size!(Service, 100); // XXX
+        assert_size!(Service, 88);
         assert_size!(ServicesQuery, 1);
         assert_size!(ServicesResult, 16);
         assert_size!(Credentials, 12);