diff --git a/core/tests/regression_tests.rs b/core/tests/regression_tests.rs
index 9c45fc5c6..90f105bfe 100644
--- a/core/tests/regression_tests.rs
+++ b/core/tests/regression_tests.rs
@@ -33,6 +33,7 @@ macro_rules! swf_tests {
 // The test folder is a relative to core/tests/swfs
 // Inside the folder is expected to be "test.swf" and "output.txt" with the correct output.
 swf_tests! {
+    (add_property, "avm1/add_property", 1),
     (do_init_action, "avm1/do_init_action", 3),
     (execution_order1, "avm1/execution_order1", 3),
     (execution_order2, "avm1/execution_order2", 15),
diff --git a/core/tests/swfs/avm1/add_property/output.txt b/core/tests/swfs/avm1/add_property/output.txt
new file mode 100644
index 000000000..c429a83e3
--- /dev/null
+++ b/core/tests/swfs/avm1/add_property/output.txt
@@ -0,0 +1,9 @@
+false
+false
+false
+true
+10
+10
+true
+10
+0
diff --git a/core/tests/swfs/avm1/add_property/test.fla b/core/tests/swfs/avm1/add_property/test.fla
new file mode 100644
index 000000000..d1653845f
Binary files /dev/null and b/core/tests/swfs/avm1/add_property/test.fla differ
diff --git a/core/tests/swfs/avm1/add_property/test.swf b/core/tests/swfs/avm1/add_property/test.swf
new file mode 100644
index 000000000..d08f183ce
Binary files /dev/null and b/core/tests/swfs/avm1/add_property/test.swf differ