diff --git a/xmpp-parsers/src/ibr.rs b/xmpp-parsers/src/ibr.rs
index ecc0836f..b0a2f859 100644
--- a/xmpp-parsers/src/ibr.rs
+++ b/xmpp-parsers/src/ibr.rs
@@ -126,7 +126,7 @@ mod tests {
     #[cfg(target_pointer_width = "64")]
     #[test]
     fn test_size() {
-        assert_size!(Query, 168);
+        assert_size!(Query, 160);
     }
 
     #[test]
diff --git a/xmpp-parsers/src/xhtml.rs b/xmpp-parsers/src/xhtml.rs
index 390cc997..fd0312f1 100644
--- a/xmpp-parsers/src/xhtml.rs
+++ b/xmpp-parsers/src/xhtml.rs
@@ -516,7 +516,7 @@ mod tests {
     #[cfg(target_pointer_width = "64")]
     #[test]
     fn test_size() {
-        assert_size!(XhtmlIm, 56);
+        assert_size!(XhtmlIm, 48);
         assert_size!(Child, 112);
         assert_size!(Tag, 104);
     }