diff --git a/core/src/avm2/amf.rs b/core/src/avm2/amf.rs
index 0303d6abb82aa..393d582055842 100644
--- a/core/src/avm2/amf.rs
+++ b/core/src/avm2/amf.rs
@@ -202,11 +202,15 @@ pub fn recursive_serialize<'gc>(
 ) -> Result<(), Error<'gc>> {
     if let Some(static_properties) = static_properties {
         let vtable = obj.vtable();
+        // TODO: respect versioning
         let mut props = vtable.public_properties();
         // Flash appears to use vtable iteration order, but we sort ours
         // to make our test output consistent.
         props.sort_by_key(|(name, _)| name.to_utf8_lossy().to_string());
         for (name, prop) in props {
+            if let Property::Method { .. } = prop {
+                continue;
+            }
             if let Property::Virtual { get, set } = prop {
                 if !(get.is_some() && set.is_some()) {
                     continue;
diff --git a/tests/tests/swfs/avm2/bytearray_method_serialization/Test.as b/tests/tests/swfs/avm2/bytearray_method_serialization/Test.as
new file mode 100644
index 0000000000000..6853e5d032f39
--- /dev/null
+++ b/tests/tests/swfs/avm2/bytearray_method_serialization/Test.as
@@ -0,0 +1,19 @@
+// compiled with mxmlc (and modified to SWF v9)
+
+import flash.utils.ByteArray;
+import flash.geom.Point;
+
+var p = new Point();
+var b = new ByteArray();
+b.writeObject(p);
+trace(b.length);
+
+package {
+    import flash.display.MovieClip;
+
+    public class Test extends MovieClip {
+        public function Test() {
+            return;
+        }
+    }
+}
diff --git a/tests/tests/swfs/avm2/bytearray_method_serialization/output.txt b/tests/tests/swfs/avm2/bytearray_method_serialization/output.txt
new file mode 100644
index 0000000000000..7273c0fa8c522
--- /dev/null
+++ b/tests/tests/swfs/avm2/bytearray_method_serialization/output.txt
@@ -0,0 +1 @@
+25
diff --git a/tests/tests/swfs/avm2/bytearray_method_serialization/test.swf b/tests/tests/swfs/avm2/bytearray_method_serialization/test.swf
new file mode 100644
index 0000000000000..9e64a67f5d0ec
Binary files /dev/null and b/tests/tests/swfs/avm2/bytearray_method_serialization/test.swf differ
diff --git a/tests/tests/swfs/avm2/bytearray_method_serialization/test.toml b/tests/tests/swfs/avm2/bytearray_method_serialization/test.toml
new file mode 100644
index 0000000000000..dbee897f5863d
--- /dev/null
+++ b/tests/tests/swfs/avm2/bytearray_method_serialization/test.toml
@@ -0,0 +1 @@
+num_frames = 1