diff --git a/test/built-ins/Promise/prototype/finally/this-value-non-promise.js b/test/built-ins/Promise/prototype/finally/this-value-proxy.js
similarity index 100%
rename from test/built-ins/Promise/prototype/finally/this-value-non-promise.js
rename to test/built-ins/Promise/prototype/finally/this-value-proxy.js
diff --git a/test/built-ins/Promise/prototype/finally/this-value-thenable.js b/test/built-ins/Promise/prototype/finally/this-value-thenable.js
new file mode 100644
index 0000000000..9fe927ac5b
--- /dev/null
+++ b/test/built-ins/Promise/prototype/finally/this-value-thenable.js
@@ -0,0 +1,17 @@
+// Copyright (C) 2019 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-promise.prototype.finally
+description: >
+  Promise.prototype.finally invoked on thenable returns result of "then" call.
+features: [Promise.prototype.finally]
+---*/
+
+var thenResult = {};
+var Thenable = function() {};
+Thenable.prototype.then = function() { return thenResult; };
+
+assert.sameValue(
+  Promise.prototype.finally.call(new Thenable()),
+  thenResult
+);