diff --git a/js/src/tests/js1_8_5/regress/jstests.list b/js/src/tests/js1_8_5/regress/jstests.list
index cd74078d48ed..09ca2da49cd0 100644
--- a/js/src/tests/js1_8_5/regress/jstests.list
+++ b/js/src/tests/js1_8_5/regress/jstests.list
@@ -21,3 +21,4 @@ script regress-563210.js
 script regress-563221.js
 script regress-566549.js
 script regress-566914.js
+script regress-569306.js
\ No newline at end of file
diff --git a/js/src/tests/js1_8_5/regress/regress-569306.js b/js/src/tests/js1_8_5/regress/regress-569306.js
new file mode 100644
index 000000000000..221782186945
--- /dev/null
+++ b/js/src/tests/js1_8_5/regress/regress-569306.js
@@ -0,0 +1,10 @@
+function f() {}
+var g = new Function();
+delete Function;
+function h() {}
+
+assertEq(f.__proto__, g.__proto__);
+assertEq(g.__proto__, h.__proto__);
+assertEq(false, "Function" in this);
+
+reportCompare("ok", "ok", "bug 569306");