diff --git a/core/tests/regression_tests.rs b/core/tests/regression_tests.rs
index 5da79b5fb..3424b709e 100644
--- a/core/tests/regression_tests.rs
+++ b/core/tests/regression_tests.rs
@@ -121,6 +121,7 @@ swf_tests! {
     (xml_insert_before, "avm1/xml_insert_before", 1),
     (xml_to_string, "avm1/xml_to_string", 1),
     (xml_to_string_comment, "avm1/xml_to_string_comment", 1),
+    (xml_idmap, "avm1/xml_idmap", 1),
     (xml_inspect_doctype, "avm1/xml_inspect_doctype", 1),
     #[ignore] (xml_inspect_xmldecl, "avm1/xml_inspect_xmldecl", 1),
     (xml_inspect_createmethods, "avm1/xml_inspect_createmethods", 1),
diff --git a/core/tests/swfs/avm1/xml_idmap/output.txt b/core/tests/swfs/avm1/xml_idmap/output.txt
new file mode 100644
index 000000000..8bad56377
--- /dev/null
+++ b/core/tests/swfs/avm1/xml_idmap/output.txt
@@ -0,0 +1,21 @@
+true
+true
+idmap has test
+idmap has test2
+Manually added new node via appendChild
+Checking old copy of IDMAP...
+idmap has test
+idmap has test2
+Checking new copy of IDMAP...
+idmap has test
+idmap has test2
+Parsed another node with parseXML...
+idmap has test
+idmap has test2
+idmap has test4
+Checking for IDMAP expandos...
+idmap has test
+idmap has test124
+idmap has test2
+idmap has test4
+trace
diff --git a/core/tests/swfs/avm1/xml_idmap/test.fla b/core/tests/swfs/avm1/xml_idmap/test.fla
new file mode 100644
index 000000000..3de29a081
Binary files /dev/null and b/core/tests/swfs/avm1/xml_idmap/test.fla differ
diff --git a/core/tests/swfs/avm1/xml_idmap/test.swf b/core/tests/swfs/avm1/xml_idmap/test.swf
new file mode 100644
index 000000000..f5c531e58
Binary files /dev/null and b/core/tests/swfs/avm1/xml_idmap/test.swf differ