diff --git a/examples/acceptance_tests/018/aiken.toml b/examples/acceptance_tests/018/aiken.toml
new file mode 100644
index 00000000..b56aa635
--- /dev/null
+++ b/examples/acceptance_tests/018/aiken.toml
@@ -0,0 +1,2 @@
+name = "acceptance_test_018"
+version = "0.0.0"
diff --git a/examples/acceptance_tests/018/lib/test.ak b/examples/acceptance_tests/018/lib/test.ak
new file mode 100644
index 00000000..335b0770
--- /dev/null
+++ b/examples/acceptance_tests/018/lib/test.ak
@@ -0,0 +1,10 @@
+pub fn or_else(opt: Option<a>, default: a) -> a {
+  when opt is {
+    None -> default
+    Some(a) -> a
+  }
+}
+
+test or_else_2() {
+  or_else(Some(42), 14) == 42
+}