diff --git a/core/tests/regression_tests.rs b/core/tests/regression_tests.rs
index 0d352b08a..071526d95 100644
--- a/core/tests/regression_tests.rs
+++ b/core/tests/regression_tests.rs
@@ -371,6 +371,7 @@ swf_tests! {
     (as3_is_finite, "avm2/is_finite", 1),
     (as3_is_nan, "avm2/is_nan", 1),
     (as3_istype, "avm2/istype", 1),
+    (as3_istypelate, "avm2/istype", 1),
     (as3_instanceof, "avm2/instanceof", 1),
     (as3_astype, "avm2/astype", 1),
     (as3_astypelate, "avm2/astypelate", 1),
diff --git a/core/tests/swfs/avm2/istype/output.txt b/core/tests/swfs/avm2/istype/output.txt
new file mode 100644
index 000000000..e361aec71
--- /dev/null
+++ b/core/tests/swfs/avm2/istype/output.txt
@@ -0,0 +1,24 @@
+//x as Object
+true
+//x as Test2
+true
+//x as ITest2
+true
+//x as Test3
+true
+//x as ITest3
+true
+//x as Test4
+false
+//y as Object
+true
+//y as Test2
+true
+//y as ITest2
+true
+//y as Test3
+true
+//y as ITest3
+true
+//y as Test4
+true
\ No newline at end of file
diff --git a/core/tests/swfs/avm2/istype/test.swf b/core/tests/swfs/avm2/istype/test.swf
new file mode 100644
index 000000000..cb6c0657a
Binary files /dev/null and b/core/tests/swfs/avm2/istype/test.swf differ