diff --git a/examples/acceptance_tests/015/aiken.toml b/examples/acceptance_tests/015/aiken.toml
new file mode 100644
index 00000000..8306c37d
--- /dev/null
+++ b/examples/acceptance_tests/015/aiken.toml
@@ -0,0 +1,2 @@
+name = "acceptance_test_015"
+version = "0.0.0"
diff --git a/examples/acceptance_tests/015/lib/test.ak b/examples/acceptance_tests/015/lib/test.ak
new file mode 100644
index 00000000..bc5b08a7
--- /dev/null
+++ b/examples/acceptance_tests/015/lib/test.ak
@@ -0,0 +1,11 @@
+pub opaque type Map<key, value> {
+  inner: List<#(key, value)>,
+}
+
+pub fn new() {
+  Map { inner: [] }
+}
+
+test new_1() {
+  new() == Map { inner: [] }
+}