diff --git a/tests/pos/i17008.scala b/tests/pos/i17008.scala
new file mode 100644
index 000000000000..2bf0f155afbc
--- /dev/null
+++ b/tests/pos/i17008.scala
@@ -0,0 +1,9 @@
+abstract class A {
+  protected def foo(text: String, bar: () => Unit = () => ()): Unit = println(s"$text, $bar")
+}
+
+class B extends A {
+  def f1(): Unit = {
+    super.foo("X")
+  }
+}