diff --git a/core/src/avm1/globals/load_vars.rs b/core/src/avm1/globals/load_vars.rs
index abb1f516a..2f1e6fc1f 100644
--- a/core/src/avm1/globals/load_vars.rs
+++ b/core/src/avm1/globals/load_vars.rs
@@ -86,7 +86,7 @@ pub fn create_proto<'gc>(
     object.define_value(
         gc_context,
         "contentType",
-        "application/x-www-form-url-encoded".into(),
+        "application/x-www-form-urlencoded".into(),
         Attribute::DONT_DELETE | Attribute::READ_ONLY | Attribute::DONT_ENUM,
     );
 
diff --git a/core/src/avm1/globals/xml.rs b/core/src/avm1/globals/xml.rs
index 9c2bc2639..d6d887120 100644
--- a/core/src/avm1/globals/xml.rs
+++ b/core/src/avm1/globals/xml.rs
@@ -1087,6 +1087,12 @@ pub fn create_xml_proto<'gc>(
         Attribute::READ_ONLY,
     );
     xml_proto.define_value(gc_context, "ignoreWhite", false.into(), Attribute::empty());
+    xml_proto.define_value(
+        gc_context,
+        "contentType",
+        "application/x-www-form-urlencoded".into(),
+        Attribute::empty(),
+    );
     xml_proto.add_property(
         gc_context,
         "xmlDecl",