diff --git a/tests/pos/orinf.scala b/tests/pos/orinf.scala
new file mode 100644
index 000000000000..30b7fd2f6353
--- /dev/null
+++ b/tests/pos/orinf.scala
@@ -0,0 +1,6 @@
+object Test {
+
+  def foo(lis: scala.collection.immutable.Set[Int] | scala.collection.immutable.Set[String]) = lis
+  foo(Set(1))
+  foo(Set(""))
+}